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Physics Superconductivity and Magnetism

Single Crystal Growth at Warwick

A list of papers containing results collected, in full or in part, using single crystals or polycrystalline samples prepared as part of the Single Crystal Growth at Warwick grant - 2019 to 2023.

EP/T005963/1 Single Crystal Growth at Warwick, August 2019 - August 2023

C. Bigi, L. Qiao, C. Liu, P. Barone, M.C. Hatnean, G.-R. Siemann, B. Achinuq, D.A. Mayoh, G. Vinai, V. Polewczyk, D. Dagur, F. Mazzola, P. Bencok, T. Hesjedal, G. van der Laan, W. Ren, G. Balakrishnan, S. Picozzi, and P.D.C. King, Covalency, correlations, and interlayer interactions governing the magnetic and electronic structure of Mn3Si2Te6, Physical Review B, 108 054419 (2023) .

G. D. A. Wood, D. D. Khalyavin, D. A. Mayoh, J. Bouaziz, A. E. Hall, S. J. R. Holt, F. Orlandi, P. Manuel, S. Blugel, J. B. Staunton, O. A. Petrenko, M. R. Lees, G. Balakrishnan, Double-Q ground state with topological charge stripes in the centrosymmetric, Physical Review B 107, L180402 (2023).

R. Brearton, S. H. Moody, L. A. Turnbull, P. D. Hatton, A. Štefančič, G. Balakrishnan, G. van der Laan, and T. Hesjedal, Observation of the Chiral Soliton Lattice above Room Temperature, Advanced Physics Research, 2200116 (2023).

J. Stankiewicz, P. Schlottmann, J. Blasco, M. C. Hatnean, G. Balakrishnan, Dielectric and transient electrical response of SmB6 single crystals, Materials Research Bulletin 159, 112105 (2023).

L. Powalla, M. T. Birch, K. Litzius, S. Wintz, F. S. Yasin, L. A. Turnbull, F. Schulz, D. A. Mayoh, G. Balakrishnan, M. Weigand, X. Z. Yu, K. Kern, G. Schutz, M. Burghard, Seeding and Emergence of Composite Skyrmions in a van der Waals Magnet, Advanced Materials DOI 10.1002/adma.202208930 (2023).

P. Li, H. Q. Ye, Y. Hu, Y. Fang, Z. G. Xiao, Z. Z. Wu, Z. Y. Shan, R. P. Singh, G. Balakrishnan, D. W. Shen, Y. F. Yang, C. Cao, N. C. Plumb, M. Smidman, M. Shi, J. Kroha, H. Q. Yuan, F. Steglich, Y. Liu, Photoemission signature of the competition between magnetic order and Kondo effect in CeCoGe3, Physical Review B 107, L201104 (2023).

J. A. Krieger, D. Tay, I. P. Rusinov, S. Barua, P. K. Biswas, L. Korosec, T. Prokscha, T. Schmitt, N. B. M. Schroter, T. Shang, T. Shiroka, A. Suter, G. Balakrishnan, E. V. Chulkov, V. N. Strocov, Z. Salman, Hydrogen-impurity-induced unconventional magnetism in semiconducting molybdenum ditelluride, Physical Review Materials 7, 044414 (2023).

M. Islam, M. C. Hatnean, G. Balakrishnan, O. A. Petrenko, Frustrated Magnet Mn3Al2Ge3O12 Garnet: Crystal Growth by the Optical Floating Zone Method, Crystals 13, 397 (2023).

B. Edwards, O. Dowinton, A. E. Hall, P. A. E. Murgatroyd, S. Buchberger, T. Antonelli, G. R. Siemann, A. Rajan, E. A. Morales, A. Zivanovic, C. Bigi, R. V. Belosludov, C. M. Polley, D. Carbone, D. A. Mayoh, G. Balakrishnan, M. S. Bahramy, P. D. C. King, Giant valleyZeeman coupling in the surface layer of an intercalated transition metal dichalcogenide, Nature Materials 22, 459-+ (2023).

A. S. Cameron, Y. V. Tymoshenko, P. Y. Portnichenko, A. S. Sukhanov, M. C. Hatnean, D. M. Paul, G. Balakrishnan, R. Cubitt, D. S. Inosov, Adherence of the rotating vortex lattice in the noncentrosymmetric superconductor Ru7B3 to the London model, Journal of Physics-Condensed Matter 35, 425602 (2023).

A. C. Twitchett-Harrison, J. C. Loudon, R. A. Pepper, M. T. Birch, H. Fangohr, P. A. Midgley, G. Balakrishnan, P. D. Hatton, Confinement of Skyrmions in Nanoscale FeGe Device-like Structures, ACS Applied Electronic Materials DOI 10.1021/acsaelm.2c00692 (2022).

L. A. Turnbull, M. T. Littlehales, M. N. Wilson, M. T. Birch, H. Popescu, N. Jaouen, J. A. T. Verezhak, G. Balakrishnan, P. D. Hatton, X-ray holographic imaging of magnetic surface spirals in FeGe lamellae, Physical Review B 106, 064422 (2022).

N. Qureshi, B. Z. Malkin, S. X. M. Riberolles, C. Ritter, B. Ouladdiaf, G. Balakrishnan, M. C. Hatnean, O. A. Petrenko, Magnetic structures of geometrically frustrated SrGd2O4 derived from powder and single-crystal neutron diffraction, Physical Review B 105, 014425 (2022).

N. Qureshi, H. E. Fischer, S. X. M. Riberolles, T. C. Hansen, M. C. Hatnean, O. A. Petrenko, Magnetic short-range order in polycrystalline SrGd2O4 and SrNd2O4 studied by reverse Monte Carlo simulations and magnetic pair-distribution function analysis, Physical Review B 106, 224426 (2022).

D. A. Mayoh, J. Bouaziz, A. E. Hall, J. B. Staunton, M. R. Lees, G. Balakrishnan, Giant topological and planar Hall effect in Cr1/3NbS2, Physical Review Research 4, 013134 (2022).

H. Liu, A. J. Hickey, M. Hartstein, A. J. Davies, A. G. Eaton, T. Elvin, E. Polyakov, T. H. Vu, V. Wichitwechkarn, T. Forster, J. Wosnitza, T. P. Murphy, N. Shitsevalova, M. D. Johannes, M. C. Hatnean, G. Balakrishnan, G. G. Lonzarich, S. E. Sebastian, f-electron hybridised Fermi surface in magnetic field-induced metallic YbB12, npj Quantum Materials 7, 12 (2022).

M. T. Littlehales, L. A. Turnbull, M. N. Wilson, M. T. Birch, H. Popescu, N. Jaouen, J. A. T. Verezhak, G. Balakrishnan, P. D. Hatton, Enhanced skyrmion metastability under applied strain in FeGe, Physical Review B 106, 214434 (2022).

D. G. C. Jonas, P. K. Biswas, A. D. Hillier, D. A. Mayoh, M. R. Lees, Quantum muon diffusion and the preservation of time-reversal symmetry in the superconducting state of type-I rhenium, Physical Review B 105, L020503 (2022).

T. J. Hicken, M. N. Wilson, S. J. R. Holt, R. Khassanov, M. R. Lees, R. Gupta, D. Das, G. Balakrishnan, T. Lancaster, Magnetism in the Neel-skyrmion host GaV4S8 under pressure, Physical Review B 105, 134414 (2022).

T. J. Hicken, Z. Hawkhead, M. N. Wilson, B. M. Huddart, A. E. Hall, G. Balakrishnan, C. Wang, F. L. Pratt, S. J. Clark, T. Lancaster, Energy-gap driven low-temperature magnetic and transport properties in Cr1/3MS2 (M = Nb, Ta), Physical Review B 105, L060407 (2022).

A. E. Hall, J. C. Loudon, P. A. Midgley, A. C. Twitchett-Harrison, S. J. R. Holt, D. A. Mayoh, J. P. Tidey, Y. Han, M. R. Lees, G. Balakrishnan, Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/3NbS2, Physical Review Materials 6, 024407 (2022).

Y. I. Dublenych, O. A. Petrenko, An Ising model on a 3D honeycomb zigzag-ladder lattice: A solution to the ground-state problem, Scipost Physics Core 5, (2022).

A. S. Cameron, Y. S. Yerin, Y. V. Tymoshenko, P. Y. Portnichenko, A. S. Sukhanov, M. C. Hatnean, D. M. Paul, G. Balakrishnan, R. Cubitt, A. Heinemann, D. S. Inosov, Singlet-triplet mixing in the order parameter of the noncentrosymmetric superconductor Ru7B3, Physical Review B 105, 094519 (2022).

M. T. Birch, D. Cortes-Ortuno, K. Litzius, S. Wintz, F. Schulz, M. Weigand, A. Stefancic, D. A. Mayoh, G. Balakrishnan, P. D. Hatton, G. Schutz, Toggle-like current-induced Bloch point dynamics of 3D skyrmion strings in a room temperature nanowire, Nature Communications 13, 3630 (2022).

A. Bhattacharyya, M. R. Lees, K. Panda, P. P. Ferreira, T. T. Dorini, E. Gaudry, L. T. F. Eleno, V. K. Anand, J. Sannigrahi, P. K. Biswas, R. Tripathi, D. T. Adroja, Nodeless time-reversal symmetry breaking in the centrosymmetric superconductor Sc5Co4Si10 probed by muon-spin spectroscopy, Physical Review Materials 6, 064802 (2022).

M. N. Wilson, T. J. Hicken, M. Gomilsek, A. Stefancic, G. Balakrishnan, J. C. Loudon, A. C. Twitchett-Harrison, F. L. Pratt, M. Telling, T. Lancaster, Spin dynamics in bulk MnNiGa and Mn1.4Pt0.9Pd0.1Sn investigated by muon spin relaxation, Physical Review B 104, 134414 (2021).

L. A. Turnbull, M. T. Birch, A. Laurenson, N. Bukin, E. O. Burgos-Parra, H. Popescu, M. N. Wilson, A. Stefancic, G. Balakrishnan, F. Y. Ogrin, P. D. Hatton, Tilted X-Ray Holography of Magnetic Bubbles in MnNiGa Lamellae, Acs Nano 15, 387-395 (2021).

L. O. Sandberg, R. Edberg, I. M. B. Bakke, K. S. Pedersen, M. C. Hatnean, G. Balakrishnan, L. Mangin-Thro, A. Wildes, B. Fak, G. Ehlers, G. Sala, P. Henelius, K. Lefmann, P. P. Deen, Emergent magnetic behavior in the frustrated Yb3Ga5O12 garnet, Physical Review B 104, 064425 (2021).

N. Qureshi, A. R. Wildes, C. Ritter, B. Fak, S. X. M. Riberolles, M. C. Hatnean, O. A. Petrenko, Magnetic structure and low-temperature properties of geometrically frustrated SrNd2O4, Physical Review B 103, 134433 (2021).

N. Qureshi, O. Fabelo, P. Manuel, D. D. Khalyavin, E. Lhotel, S. X. M. Riberolles, G. Balakrishnan, O. A. Petrenko, Field-induced magnetic states in geometrically frustrated SrEr2O4, Scipost Physics 11, 007 (2021).

J. A. M. Paddison, G. Ehlers, A. B. Cairns, J. S. Gardner, O. A. Petrenko, N. P. Butch, D. D. Khalyavin, P. Manuel, H. E. Fischer, H. D. Zhou, A. L. Goodwin, J. R. Stewart, Suppressed-moment 2-k order in the canonical frustrated antiferromagnet Gd2Ti2O7, npj Quantum Materials 6, 99 (2021).

R. Ohlendorf, S. Spachmann, L. Fischer, K. Dey, D. Brunt, G. Balakrishnan, O. A. Petrenko, R. Klingeler, Magnetoelastic coupling and Gruneisen scaling in NdB4, Physical Review B 103, 104424 (2021).

A. Mostaed, B. Walkley, M. C. Hatnean, G. Balakrishnan, M. R. Lees, R. Beanland, D. C. Sinclair, I. M. Reaney, Characterizing oxygen atoms in perovskite and pyrochlore oxides using ADF-STEM at a resolution of a few tens of picometers, Acta Materialia 208, 116717 (2021).

S. H. Moody, P. Nielsen, M. N. Wilson, D. A. Venero, A. Stefancic, G. Balakrishnan, P. D. Hatton, Experimental evidence of a change of exchange anisotropy sign with temperature in Zn-substituted Cu2OSeO3, Physical Review Research 3, 043149 (2021).

D. A. Mayoh, G. D. A. Wood, S. J. R. Holt, G. Beckett, E. J. L. Dekker, M. R. Lees, G. Balakrishnan, Effects of Fe Deficiency and Co Substitution in Polycrystalline and Single Crystals of Fe3GeTe2, Crystal Growth & Design 21, 6786-6792 (2021).

D. A. Mayoh, S. J. R. Holt, T. Takabatake, G. Balakrishnan, M. R. Lees, Anisotropic superconductivity and unusually robust electronic critical field in single crystal La7Ir3, Physical Review Materials 5, 114803 (2021).

D. A. Mayoh, A. D. Hillier, G. Balakrishnan, M. R. Lees, Evidence for the coexistence of time-reversal symmetry breaking and Bardeen-Cooper-Schrieffer-like superconductivity in La7Pd3, Physical Review B 103, 024507 (2021).

C. Macchiutti, J. R. Jesus, F. B. Carneiro, L. Bufaical, M. C. Hatnean, G. Balakrishnan, E. M. Bittar, Absence of zero-field-cooled exchange bias effect in single crystalline La2-xAxCoMnO6 (A= Ca, Sr) compounds, Physical Review Materials 5, 094402 (2021).

M. Leger, E. Lhotel, E. Ressouche, K. Beauvois, F. Damay, C. Paulsen, A. Al-Mawla, E. Suard, M. C. Hatnean, G. Balakrishnan, S. Petit, Field-temperature phase diagram of the enigmatic Nd2(Zr1-xTix)2O7 pyrochlore magnets, Physical Review B 103, 214449 (2021).

M. Leger, E. Lhotel, M. C. Hatnean, J. Ollivier, A. R. Wildes, S. Raymond, E. Ressouche, G. Balakrishnan, S. Petit, Spin Dynamics and Unconventional Coulomb Phase in Nd2Zr2O7, Physical Review Letters 126, 247201 (2021).

D. D. Khalyavin, P. Manuel, M. C. Hatnean, O. A. Petrenko, Fragile ground state and rigid field-induced structures in the zigzag ladder compound BaDy2O4, Physical Review B 103, 134434 (2021).

H. Jacobsen, O. Florea, E. Lhotel, K. Lefmann, O. A. Petrenko, C. S. Knee, T. Seydel, P. F. Henry, R. Bewley, D. Voneshen, A. Wildes, G. Nilsen, P. P. Deen, Spin dynamics of the director state in frustrated hyperkagome systems, Physical Review B 104, 054440 (2021).

B. M. Huddart, M. Gomilsek, T. J. Hicken, F. L. Pratt, S. J. Blundell, P. A. Goddard, S. J. Kaech, J. L. Manson, T. Lancaster, Magnetic order and ballistic spin transport in a sine-Gordon spin chain, Physical Review B 103, L060405 (2021).

S. J. R. Holt, A. Stefancic, J. C. Loudon, M. R. Lees, G. Balakrishnan, Investigations of the size distribution and magnetic properties of nanoparticles of Cu2OSeO3, Materials Research Express 8, 116101 (2021).

S. J. R. Holt, C. Ritter, M. R. Lees, G. Balakrishnan, Investigation of the magnetic ground state of GaV4S8 using powder neutron diffraction, Journal of Physics-Condensed Matter 33, 255802 (2021).

T. J. Hicken, M. N. Wilson, K. J. A. Franke, B. M. Huddart, Z. Hawkhead, M. Gomilsek, S. J. Clark, F. L. Pratt, A. StefanCiC, A. E. Hall, M. C. Hatnean, G. Balakrishnan, T. Lancaster, Megahertz dynamics in skyrmion systems probed with muon-spin relaxation, Physical Review B 103, 024428 (2021).

A. E. Hall, D. D. Khalyavin, P. Manuel, D. A. Mayoh, F. Orlandi, O. A. Petrenko, M. R. Lees, G. Balakrishnan, Magnetic structure investigation of the intercalated transition metal dichalcogenide V1/3NbS2, Physical Review B 103, 174431 (2021).

L. S. Farrar, A. Nevill, Z. J. Lim, G. Balakrishnan, S. Dale, S. J. Bending, Superconducting Quantum Interference in Twisted van der Waals Heterostructures, Nano Letters 21, 6725-6731 (2021).

Y. S. Eo, A. Rakoski, S. Sinha, D. Mihaliov, W. T. Fuhrman, S. R. Saha, P. F. S. Rosa, Z. Fisk, M. C. Hatnean, G. Balakrishnan, J. R. Chamorro, W. A. Phelan, S. M. Koohpayeh, T. M. McQueen, B. Kang, M. S. Song, B. Cho, M. S. Fuhrer, J. Paglione, C. Kurdak, Bulk transport paths through defects in floating zone and Al flux grown SmB6, Physical Review Materials 5, 055001 (2021).

D. Das, D. T. Adroja, M. R. Lees, R. W. Taylor, Z. S. Bishnoi, V. K. Anand, A. Bhattacharyya, Z. Guguchia, C. Baines, H. Luetkens, G. B. G. Stenning, L. Duan, X. C. Wang, C. Q. Jin, Probing the superconducting gap structure in the noncentrosymmetric topological superconductor ZrRuAs, Physical Review B 103, 144516 (2021).

M. A. Carpenter, D. Pesquera, D. O'Flynn, G. Balakrishnan, N. Mufti, A. A. Nugroho, T. T. M. Palstra, M. Mihalik, M. Mihalik, M. Zentkova, A. Almeida, J. A. Moreira, R. Vilarinho, D. Meier, Strain relaxation dynamics of multiferroic orthorhombic manganites, Journal of Physics-Condensed Matter 33, 125402 (2021).

R. Brearton, L. A. Turnbull, J. A. T. Verezhak, G. Balakrishnan, P. D. Hatton, G. van der Laan, T. Hesjedal, Deriving the skyrmion Hall angle from skyrmion lattice dynamics, Nature Communications 12, 2723 (2021).

P. K. Biswas, S. K. Ghosh, J. Z. Zhao, D. A. Mayoh, N. D. Zhigadlo, X. F. Xu, C. Baines, A. D. Hillier, G. Balakrishnan, M. R. Lees, Chiral singlet superconductivity in the weakly correlated metal LaPt3P, Nature Communications 12, 2504 (2021).

M. T. Birch, D. Cortes-Ortuno, N. D. Khanh, S. Seki, A. Stefancic, G. Balakrishnan, Y. Tokura, P. D. Hatton, Topological defect-mediated skyrmion annihilation in three dimensions, Communications Physics 4, 175 (2021).

D. T. Adroja, A. Bhattacharyya, Y. J. Sato, M. R. Lees, P. K. Biswas, K. Panda, V. K. Anand, G. B. G. Stenning, A. D. Hillier, D. Aoki, Pairing symmetry of an intermediate valence superconductor CeIr3 investigated using muSR measurements, Physical Review B 103, 104514 (2021).

M. N. Wilson, M. T. Birch, A. Stefancic, A. C. Twitchett-Harrison, G. Balakrishnan, T. J. Hicken, R. Fan, P. Steadman, P. D. Hatton, Stability and metastability of skyrmions in thin lamellae of Cu2OSeO3, Physical Review Research 2, 013096 (2020).

M. D. Watson, I. Markovic, F. Mazzola, A. Rajan, E. A. Morales, D. M. Burn, T. Hesjedal, G. van der Laan, S. Mukherjee, T. K. Kim, C. Bigi, I. Vobornik, M. C. Hatnean, G. Balakrishnan, P. D. C. King, Direct observation of the energy gain underpinning ferromagnetic superexchange in the electronic structure of CrGeTe3, Physical Review B 101, 205125 (2020).

G. Vinai, C. Bigi, A. Rajan, M. D. Watson, T. L. Lee, F. Mazzola, S. Modesti, S. Barua, M. C. Hatnean, G. Balakrishnan, P. D. C. King, P. Torelli, G. Rossi, G. Panaccione, Proximity-induced ferromagnetism and chemical reactivity in few-layer VSe2 heterostructures, Physical Review B 101, 035404 (2020).

M. Twengstrom, L. Bovo, O. A. Petrenko, S. T. Bramwell, P. Henelius, LiHoF4: Cuboidal demagnetizing factor in an Ising ferromagnet, Physical Review B 102, 144426 (2020).

T. Stoter, M. Doerr, S. Granovsky, M. Rotter, S. T. B. Goennenwein, S. Zherlitsyn, O. A. Petrenko, G. Balakrishnan, H. D. Zhou, J. Wosnitza, Extremely slow nonequilibrium monopole dynamics in classical spin ice, Physical Review B 101, 224416 (2020).

A. Stefancic, S. J. R. Holt, M. R. Lees, C. Ritter, M. J. Gutmann, T. Lancaster, G. Balakrishnan, Establishing magneto-structural relationships in the solid solutions of the skyrmion hosting family of materials: GaV4S8-ySey, Scientific Reports 10, 9813 (2020).

S. Mehdipour, D. Lopez-Diaz, M. M. Velazquez, P. Hidalgo, B. Mendez, M. Luna, V. Bellani, M. Amado, G. Balakrishnan, E. Diez, Raman response of topologically protected surface states in sub-micrometric Pb0.77Sn0.23Se flakes, Journal of Raman Spectroscopy 51, 2489 (2020).

D. Lancon, V. Scagnoli, U. Staub, O. A. Petrenko, M. C. Hatnean, E. Canevet, R. Sibille, S. Francoual, J. R. L. Mardegan, K. Beauvois, G. Balakrishnan, L. J. Heyderman, C. Ruegg, T. Fennell, Evolution of field-induced metastable phases in the Shastry-Sutherland lattice magnet TmB4, Physical Review B 102, 060407 (2020).

S. Kumar, C. E. Patrick, R. S. Edwards, G. Balakrishnan, M. R. Lees, J. B. Staunton, Torque magnetometry study of the spin reorientation transition and temperature-dependent magnetocrystalline anisotropy in NdCo5, Journal of Physics-Condensed Matter 32, 255802 (2020).

S. Kumar, C. E. Patrick, R. S. Edwards, G. Balakrishnan, M. R. Lees, J. B. Staunton, Tunability of the spin reorientation transitions with pressure in NdCo5, Applied Physics Letters 116, 102408 (2020).

S. J. R. Holt, A. Stefancic, C. Ritter, A. E. Hall, M. R. Lees, G. Balakrishnan, Structure and magnetism of the skyrmion hosting family GaV4S8-ySey with low levels of substitutions between 0 <= y <= 0.5 and 7.5 <= y <= 8, Physical Review Materials 4, 114413 (2020).

T. J. Hicken, S. J. R. Holt, K. J. A. Franke, Z. Hawkhead, A. Stefancic, M. N. Wilson, M. Gomilsek, B. M. Huddart, S. J. Clark, M. R. Lees, F. L. Pratt, S. J. Blundell, G. Balakrishnan, T. Lancaster, Magnetism and Neel skyrmion dynamics in GaV4S8-ySey, Physical Review Research 2, 032001 (2020).

M. C. Hatnean, O. A. Petrenko, M. R. Lees, T. E. Orton, G. Balakrishnan, Optical Floating Zone Crystal Growth of Rare-Earth Disilicates, R2Si2O7 (R = Er, Ho, and Tm), Crystal Growth & Design 20, 6636-6648 (2020).

M. C. Hatnean, T. Ahmad, M. Walker, M. R. Lees, G. Balakrishnan, Crystal Growth by the Floating Zone Method of Ce-Substituted Crystals of the Topological Kondo Insulator SmB6, Crystals 10, 827 (2020).

M. Hartstein, H. Liu, Y. T. Hsu, B. S. Tan, M. C. Hatnean, G. Balakrishnan, S. E. Sebastian, Intrinsic Bulk Quantum Oscillations in a Bulk Unconventional Insulator SmB6, Iscience 23, 101632 (2020).

Y. S. Eo, S. Wolgast, A. Rakoski, D. Mihaliov, B. Y. Kang, M. S. Song, B. K. Cho, M. C. Hatnean, G. Balakrishnan, Z. Fisk, S. R. Saha, X. Wang, J. Paglione, C. Kurdak, Comprehensive surface magnetotransport study of SmB6, Physical Review B 101, 155109 (2020).

M. Crisanti, M. T. Birch, M. N. Wilson, S. H. Moody, A. Stefancic, B. M. Huddart, S. Cabeza, G. Balakrishnan, P. D. Hatton, R. Cubitt, Position-dependent stability and lifetime of the skyrmion state in nickel-substituted Cu2OSeO3, Physical Review B 102, 224407 (2020).

P. Buchsteiner, L. Harmsen, M. C. Hatnean, G. Balakrishnan, M. Wenderoth, Surface analysis of the PrB6 (001) cleavage plane by scanning tunneling microscopy and spectroscopy, Physical Review B 102, 205403 (2020).

P. K. Biswas, F. N. Rybakov, R. P. Singh, S. Mukherjee, N. Parzyk, G. Balakrishnan, M. R. Lees, C. D. Dewhurst, E. Babaev, A. D. Hillier, D. M. Paul, Coexistence of type-I and type-II superconductivity signatures in ZrB12 probed by muon spin rotation measurements, Physical Review B 102, 144523 (2020).

M. T. Birch, S. H. Moody, M. N. Wilson, M. Crisanti, O. Bewley, A. Stefancic, G. Balakrishnan, R. Fan, P. Steadman, D. A. Venero, R. Cubitt, P. D. Hatton, Anisotropy-induced depinning in the Zn-substituted skyrmion host Cu2OSeO3, Physical Review B 102, 104424 (2020).

M. T. Birch, D. Cortes-Ortuno, L. A. Turnbull, M. N. Wilson, F. Gross, N. Trager, A. Laurenson, N. Bukin, S. H. Moody, M. Weigand, G. Schutz, H. Popescu, R. Fan, P. Steadman, J. A. T. Verezhak, G. Balakrishnan, J. C. Loudon, A. C. Twitchett-Harrison, O. Hovorka, H. Fangohr, F. Y. Grin, J. Grafe, P. D. Hatton, Real-space imaging of confined magnetic skyrmion tubes, Nature Communications 11, 1726 (2020).

A. Bhattacharyya, K. Panda, D. T. Adroja, N. Kase, P. K. Biswas, S. Saha, T. Das, M. R. Lees, A. D. Hillier, Investigation of superconducting gap structure in HfIrSi using muon spin relaxation/rotation, Journal of Physics-Condensed Matter 32, 085601 (2020).

A. Bhattacharyya, D. T. Adroja, P. K. Biswas, Y. J. Sato, M. R. Lees, D. Aoki, A. D. Hillier, Ir 5d-band derived superconductivity in LaIr3, Journal of Physics-Condensed Matter 32, 065602 (2020).

S. Arumugam, N. Subbulakshmi, K. Manikandan, M. Kannan, D. A. Mayoh, M. R. Lees, G. Balakrishnan, Investigation of the transport, magnetic and flux pinning properties of the noncentrosymmetric superconductor TaRh2B2 under hydrostatic pressure, Physica C-Superconductivity and Its Applications 571, 1353586 (2020).

O. Young, G. Balakrishnan, P. Manuel, D. D. Khalyavin, A. R. Wildes, O. A. Petrenko, Field-Induced Transitions in Highly Frustrated SrHo2O4, Crystals 9, 488 (2019).

C. Xin, P. Veber, M. Guennou, C. Toulouse, N. Valle, M. C. Hatnean, G. Balakrishnan, R. Haumont, R. Saint Martin, M. Velazquez, A. Maillard, D. Rytz, M. Josse, M. Maglione, J. Kreisel, Single crystal growth of BaZrO3 from the melt at 2700 degrees C using optical floating zone technique and growth prospects from BaB2O4 flux at 1350 degrees C, Crystengcomm 21, 502 (2019).

M. N. Wilson, M. Crisanti, C. Barker, A. Stefancic, J. S. White, M. T. Birch, G. Balakrishnan, R. Cubitt, P. D. Hatton, Measuring the formation energy barrier of skyrmions in zinc-substituted Cu2OSeO3, Physical Review B 99, 174421 (2019).

C. Toulouse, D. Amoroso, C. Xin, P. Veber, M. C. Hatnean, G. Balakrishnan, M. Maglione, P. Ghosez, J. Kreisel, M. Guennou, Lattice dynamics and Raman spectrum of BaZrO3 single crystals, Physical Review B 100, 134102 (2019).

A. L. Tedstone, C. E. Patrick, S. Kumar, R. S. Edwards, M. R. Lees, G. Balakrishnan, J. B. Staunton, Structural and magnetic properties of GdCo5-xNix, Physical Review Materials 3, 034409 (2019).

C. Paulsen, S. R. Giblin, E. Lhotel, D. Prabhakaran, K. Matsuhira, G. Balakrishnan, S. T. Bramwell, Nuclear spin assisted quantum tunnelling of magnetic monopoles in spin ice, Nature Communications 10, 1509 (2019).

K. Panda, A. Bhattacharyya, D. T. Adroja, N. Kase, P. K. Biswas, S. Saha, T. Das, M. R. Lees, A. D. Hillier, Probing the superconducting ground state of ZrIrSi: A muon spin rotation and relaxation study, Physical Review B 99, 174513 (2019).

D. A. Mayoh, M. J. Pearce, K. Gotze, A. D. Hillier, G. Balakrishnan, M. R. Lees, Superconductivity and the upper critical field in the chiral noncentrosymmetric superconductor NbRh2B2, Journal of Physics-Condensed Matter 31, 465601 (2019).

J. C. Loudon, A. C. Twitchett-Harrison, D. Cortes-Ortuno, M. T. Birch, L. A. Turnbull, A. Stefancic, F. Y. Ogrin, E. O. Burgos-Parra, N. Bukin, A. Laurenson, H. Popescu, M. Beg, O. Hovorka, H. Fangohr, P. A. Midgley, G. Balakrishnan, P. D. Hatton, Do Images of Biskyrmions Show Type-II Bubbles?, Advanced Materials 31, 1806598 (2019).

H. L. Kim, M. J. Coak, J. C. Baglo, K. Murphy, R. W. Hill, M. Sutherland, M. C. Hatnean, G. Balakrishnan, J. G. Park, Modular thermal Hall effect measurement setup for fast-turnaround screening of materials over wide temperature range using capacitive thermometry, Review of Scientific Instruments 90, 103904 (2019).

S. Kesari, R. Rao, M. K. Gupta, R. Mittal, G. Balakrishnan, Symmetries of modes in Ni3V2O8: Polarized Raman spectroscopy and ab initio phonon calculations, Journal of Raman Spectroscopy 50, 587 (2019).

V. Granata, L. Rocco, A. Ubaldini, M. R. Lees, R. Fittipaldi, M. C. Hatnean, S. Pace, G. Balakrishnan, A. Vecchione, Effect of different atmospheres on the synthesis of Ba2CuGe2O7 single crystals, European Physical Journal-Special Topics 228, 703-712 (2019).

K. J. A. Franke, P. R. Dean, M. C. Hatnean, M. T. Birch, D. D. Khalyavin, P. Manuel, T. Lancaster, G. Balakrishnan, P. D. Hatton, Investigating the magnetic ground state of the skyrmion host material Cu2OSeO3 using long-wavelength neutron diffraction, Aip Advances 9, (2019).

A. S. Cameron, Y. S. Yerin, Y. V. Tymoshenko, P. Y. Portnichenko, A. S. Sukhanov, M. C. Hatnean, D. M. Pau, G. Balakrishnan, R. Cubitt, A. Heinemann, D. S. Inosov, Rotation of the magnetic vortex lattice in Ru7B3 driven by the effects of broken time-reversal and inversion symmetry, Physical Review B 100, 024518 (2019).

P. Buchsteiner, F. Sohn, J. G. Horstmann, J. Voigt, M. C. Hatnean, G. Balakrishnan, C. Ropers, P. E. Blochl, M. Wenderoth, Surface resonance of the (2 x 1) reconstructed lanthanum hexaboride (001)-cleavage plane: A combined STM and DFT study, Physical Review B 100, 205407 (2019).

D. Brunt, M. C. Hatnean, O. A. Petrenko, M. R. Lees, G. Balakrishnan, Single-Crystal Growth of Metallic Rare-Earth Tetraborides by the Floating-Zone Technique, Crystals 9, 211 (2019).

M. T. Birch, R. Takagi, S. Seki, M. N. Wilson, F. Kagawa, A. Stefancic, G. Balakrishnan, R. Fan, P. Steadman, C. J. Ottley, M. Crisanti, R. Cubitt, T. Lancaster, Y. Tokura, P. D. Hatton, Increased lifetime of metastable skyrmions by controlled doping, Physical Review B 100, 014425 (2019).

F. R. Arantes, D. Aristizabal-Giraldo, D. A. Mayoh, Y. Yamane, C. L. Yang, M. R. Lees, J. M. Osorio-Guillen, T. Takabatake, M. A. Avila, Superconductivity in monocrystalline YNiSi3 and LuNiSi3, Physical Review B 99, 224505 (2019).

A list of papers containing results collected, in full or in part, using single crystals or polycrystalline samples prepared as part of the Single Crystal Growth at Warwick grant - 2015 to 2018.

EP/M028771/1Link opens in a new window Single Crystal Growth at Warwick, January 2015 - July 2018

2018

Superconducting and normal-state properties of the noncentrosymmetric superconductor Re3Ta, J. A. T. Barker, B. D. Breen, R. Hanson, A. D. Hillier, M. R. Lees, G. Balakrishnan, D. M. Paul, R. P. Singh, Phys. Rev. B 98, 104506 (2018).

Temperature and field dependence of the intrinsic tunnelling structure in overdoped Bi2Sr2CaCu2O8F8+delta, T. M. Benseman, J. R. Cooper, G. Balakrishnan, Phys. Rev. B 98, 014507 (2018).

Special temperatures in frustrated ferromagnets, L. Bovo, M. Twengstrom, O. A. Petrenko, T. Fennell, M. J. P. Gingras, S. T. Bramwell, P. Henelius, Nat. Commun. 9, 1999 (2018).

Magnetisation process in the rare earth tetraborides, NdB4 and HoB4, D. Brunt, G. Balakrishnan, D. A. Mayoh, M. R. Lees, D. Gorbunov, N. Qureshi, O. A. Petrenko, Sci. Rep. 8, 232 (2018).

Coupling between Spin and Charge Order Driven by Magnetic Field in Triangular Ising System LuFe2O4+delta, L. Ding, F. Orlandi, D. D. Khalyavin, A. T. Boothroyd, D. Prabhakaran, G. Balakrishnan, P. Manuel, Crystals 8, 88 (2018).

Electronic Structure and Enhanced Charge-Density Wave Order of Monolayer VSe2, J. G. Feng, D. Biswas, A. Rajan, M. D. Watson, F. Mazzola, O. J. Clark, K. Underwood, I. Markovic, M. McLaren, A. Hunter, D. M. Burn, L. B. Duffy, S. Barua, G. Balakrishnan, F. Bertran, P. Le Fevre, T. K. Kim, G. van der Laan, T. Hesjedal, P. Wahl, P. D. C. King, Nano Letters 18, 4493 (2018).

Manifolds of magnetic ordered states and excitations in the almost Heisenberg pyrochlore antiferromagnet MgCr2O4, S. Gao, K. Guratinder, U. Stuhr, J. S. White, M. Mansson, B. Roessli, T. Fennell, V. Tsurkan, A. Loidl, M. C. Hatnean, G. Balakrishnan, S. Raymond, L. Chapon, V. O. Garlea, A. T. Savici, A. Cervellino, A. Bombardi, D. Chernyshov, C. Ruegg, J. T. Haraldsen, O. Zaharko, Phys. Rev. B 97, 134430 (2018).

Pauling Entropy, Metastability, and Equilibrium in Dy2Ti2O7 Spin Ice, S. R. Giblin, M. Twengstrom, L. Bovo, M. Ruminy, M. Bartkowiak, P. Manuel, J. C. Andresen, D. Prabhakaran, G. Balakrishnan, E. Pomjakushina, C. Paulsen, E. Lhotel, L. Keller, M. Frontzek, S. C. Capelli, O. Zaharko, P. A. McClarty, S. T. Bramwell, P. Henelius, T. Fennell, Phys. Rev. Lett. 121, 067202 (2018).

Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB6, M. Hartstein, W. H. Toews, Y. T. Hsu, B. Zeng, X. Chen, M. C. Hatnean, Q. R. Zhang, S. Nakamura, A. S. Padgett, G. Rodway-Gant, J. Berk, M. K. Kingston, G. H. Zhang, M. K. Chan, S. Yamashita, T. Sakakibara, Y. Takano, J. H. Park, L. Balicas, N. Harrison, N. Shitsevalova, G. Balakrishnan, G. G. Lonzarich, R. W. Hill, M. Sutherland, S. E. Sebastian, Nat. Phys. 14, 166 (2018).

Low temperature magnetic properties of Nd2Ru2O7, S. T. Ku, D. Kumar, M. R. Lees, W. T. Lee, R. Aldus, A. Studer, P. Imperia, S. Asai, T. Masuda, S. W. Chen, J. M. Chen, L. J. Chang, J. Phys.-Condens. Mat. 30, 155601 (2018).

Evidence for dynamic kagome ice, E. Lhotel, S. Petit, M. C. Hatnean, J. Ollivier, H. Mutka, E. Ressouche, M. R. Lees, G. Balakrishnan, Nat. Commun. 9, 3786 (2018).

Fermi surfaces in Kondo insulators, H. Liu, M. Hartstein, G. J. Wallace, A. J. Davies, M. C. Hatnean, M. D. Johannes, N. Shitsevalova, G. Balakrishnan, S. E. Sebastian, J. Phys.-Condens. Mat. 30, 16lt01 (2018).

Multigap superconductivity in chiral noncentrosymmetric TaRh2B2, D. A. Mayoh, A. D. Hillier, K. Gotze, D. M. Paul, G. Balakrishnan, M. R. Lees, Phys. Rev. B 98, 014502 (2018).

Electron-irradiation induced defects in Yb2Ti2.05O7, A. Mostaed, G. Balakrishnan, M. R. Lees, R. Beanland, Acta Materialia 143, 291 (2018).

Experimental signatures of emergent quantum electrodynamics in Pr2Hf2O7, R. Sibille, N. Gauthier, H. Yan, M. C. Hatnean, J. Ollivier, B. Winn, U. Filges, G. Balakrishnan, M. Kenzelmann, N. Shannon, T. Fennell, Nat. Phys. 14, 711 (2018).

Suppression of magnetic excitations near the surface of the topological Kondo insulator SmB6, P. K. Biswas, M. Legner, G. Balakrishnan, M. C. Hatnean, M. R. Lees, D. M. Paul, E. Pomjakushina, T. Prokscha, A. Suter, T. Neupert, Z. Salman, Phys. Rev. B 95, 020410 (2017).

2017

Probing the interplay between surface and bulk states in the topological Kondo insulator SmB6 through conductance fluctuation spectroscopy, S. Biswas, M. C. Hatnean, G. Balakrishnan, A. Bid, Phys. Rev. B 95, 205403 (2017).

Field-induced magnetic states in holmium tetraboride, D. Brunt, G. Balakrishnan, A. R. Wildes, B. Ouladdiaf, N. Qureshi, O. A. Petrenko, Phys. Rev. B 95, 024410 (2017).

Single crystal growth, structure and magnetic properties of Pr2Hf2O7 pyrochlore, M. C. Hatnean, R. Sibille, M. R. Lees, M. Kenzelmann, V. Ban, V. Pomjakushin, G. Balakrishnan, J. Phys.-Condens. Mat. 29, 075902 (2017).

Terahertz Spectra Revealing the Collective Excitation Mode in Charge-Density-Wave Single Crystal LuFe2O4, X. M. Liu, Z. M. Jin, Z. X. Cheng, X. Lin, G. Balakrishnan, G. H. Ma, Physica Status Solidi-Rapid Research Letters 11, 1700177 (2017).

Disorder and Quantum Spin Ice, N. Martin, P. Bonville, E. Lhotel, S. Guitteny, A. Wildes, C. Decorse, M. C. Hatnean, G. Balakrishnan, I. Mirebeau, S. Petit, Phys. Rev. X 7, 041028 (2017).

Superconducting and normal-state properties of the noncentrosymmetric superconductor Re6Zr, D. A. Mayoh, J. A. T. Barker, R. P. Singh, G. Balakrishnan, D. M. Paul, M. R. Lees, Phys. Rev. B 96, 064521 (2017).

Atomic structure study of the pyrochlore Yb2Ti2O7 and its relationship with low-temperature magnetic order, A. Mostaed, G. Balakrishnan, M. R. Lees, Y. Yasui, L. J. Chang, R. Beanland, Phys. Rev. B 95, 094431 (2017).

Critical behavior study of the spin ordering transition in RVO3 (R = Ce, Pr, Nd, Sm, Gd, Er) by means of ac photopyroelectric calorimetry, A. Oleaga, V. Shvalya, V. Liubachko, G. Balakrishnan, L. D. Tung, A. Salazar, Journal of Alloys and Compounds 703, 210 (2017).

Magnetic excitations in the ground state of Yb2Ti2O7, V. Pecanha-Antonio, E. X. Feng, Y. X. Su, V. Pomjakushin, F. Demmel, L. J. Chang, R. J. Aldus, Y. G. Xiao, M. R. Lees, T. Bruckel, Phys. Rev. B 96, 214415 (2017).

Evolution of spin correlations in SrDy2O4 in an applied magnetic field, O. A. Petrenko, O. Young, D. Brunt, G. Balakrishnan, P. Manuel, D. D. Khalyavin, C. Ritter, Phys. Rev. B 95, 104442 (2017).

Electric field controlled magnetization and charge-ordering in Pr0.6Ca0.4MnO3, H. Sharma, M. R. Lees, G. Balakrishnan, D. M. Paul, A. Tulapurkar, C. V. Tomy, Materials Chemistry and Physics 194, 142 (2017).

Coulomb spin liquid in anion-disordered pyrochlore Tb2Hf2O7, R. Sibille, E. Lhotel, M. C. Hatnean, G. J. Nilsen, G. Ehlers, A. Cervellino, E. Ressouche, M. Frontzek, O. Zaharko, V. Pomjakushin, U. Stuhr, H. C. Walker, D. T. Adroja, H. Luetkens, C. Baines, A. Amato, G. Balakrishnan, T. Fennell, M. Kenzelmann, Nat. Commun. 8, 892 (2017).

Growth of YbFe2O4 single crystals exhibiting long-range charge order via the optical floating zone method, H. L. Williamson, T. Mueller, M. Angst, G. Balakrishnan, J. Cryst. Growth 475, 44 (2017).

2016

Spin-valley locking in the normal state of a transition-metal dichalcogenide superconductor, L. Bawden, S. P. Cooil, F. Mazzola, J. M. Riley, L. J. Collins-McIntyre, V. Sunko, K. W. B. Hunvik, M. Leandersson, C. M. Polley, T. Balasubramanian, T. K. Kim, M. Hoesch, J. W. Wells, G. Balakrishnan, M. S. Bahramy, P. D. C. King, Nat. Commun. 7, 11711 (2016).

Magnetic properties and crystal field in Pr2Zr2O7, P. Bonville, S. Guitteny, A. Gukasov, I. Mirebeau, S. Petit, C. Decorse, M. C. Hatnean, G. Balakrishnan, Phys. Rev. B 94, 134428 (2016).

Zirconate Pyrochlore Frustrated Magnets: Crystal Growth by the Floating Zone Technique, M. C. Hatnean, C. Decorse, M. R. Lees, O. A. Petrenko, G. Balakrishnan, Crystals 6, 79 (2016).

Critical behavior study of Pr1-xSrxMnO3 and Nd1-xSrxMnO3 with x = 1/2, A. Oleaga, A. Salazar, M. C. Hatnean, G. Balakrishnan, Journal of Alloys and Compounds 682, 825 (2016).

Experimental signature of the attractive Coulomb force between positive and negative magnetic monopoles in spin ice, C. Paulsen, S. R. Giblin, E. Lhotel, D. Prabhakaran, G. Balakrishnan, K. Matsuhira, S. T. Bramwell, Nat. Phys. 12, 661 (2016).

Observation of magnetic fragmentation in spin ice, S. Petit, E. Lhotel, B. Canals, M. C. Hatnean, J. Ollivier, H. Mutka, E. Ressouche, A. R. Wildes, M. R. Lees, G. Balakrishnan, Nat. Phys. 12, 746 (2016).

Antiferroquadrupolar correlations in the quantum spin ice candidate Pr2Zr2O7, S. Petit, E. Lhotel, S. Guitteny, O. Florea, J. Robert, P. Bonville, I. Mirebeau, J. Ollivier, H. Mutka, E. Ressouche, C. Decorse, M. C. Hatnean, G. Balakrishnan, Phys. Rev. B 94, 165153 (2016).

Observation of surface states on heavily indium-doped SnTe(111), a superconducting topological crystalline insulator, C. M. Polley, V. Jovic, T. Y. Su, M. Saghir, D. Newby, B. J. Kowalski, R. Jakiela, A. Barcz, M. Guziewicz, T. Balasubramanian, G. Balakrishnan, J. Laverock, K. E. Smith, Phys. Rev. B 93, 075132 (2016).

Candidate quantum spin ice in the pyrochlore Pr2Hf2O7, R. Sibille, E. Lhotel, M. C. Hatnean, G. Balakrishnan, B. Fak, N. Gauthier, T. Fennell, M. Kenzelmann, Phys. Rev. B 94, 024436 (2016).

Magnetic properties of a LuVO3 single crystal studied by magnetometry, heat capacity and neutron diffraction, L. D. Tung, J. Schefer, M. R. Lees, G. Balakrishnan, D. M. Paul, Journal of Science-Advanced Materials and Devices 1, 174 (2016).

2015

Unconventional Superconductivity in La7Ir3 Revealed by Muon Spin Relaxation: Introducing a New Family of Noncentrosymmetric Superconductor That Breaks Time-Reversal Symmetry, J. A. T. Barker, D. Singh, A. Thamizhavel, A. D. Hillier, M. R. Lees, G. Balakrishnan, D. M. Paul, R. P. Singh, Phys. Rev. Lett. 115, 267001 (2015).

Anomalies of a topologically ordered surface, D. Biswas, S. Thakur, K. Ali, G. Balakrishnan, K. Maiti, Sci. Rep. 5, 10260 (2015).

Exceptional surface and bulk electronic structures in a topological insulator, Bi2Se3, D. Biswas, S. Thakur, G. Balakrishnan, K. Maiti, Sci. Rep. 5, 17351 (2015).

Robust local and nonlocal transport in the topological Kondo insulator SmB6 in the presence of a high magnetic field, S. Biswas, R. Nagarajan, S. Sarkar, K. R. Amin, M. C. Hatnean, S. Tewari, G. Balakrishnan, A. Bid, Phys. Rev. B 92, 085103 (2015).

Quality Heterostructures from Two-Dimensional Crystals Unstable in Air by Their Assembly in Inert Atmosphere, Y. Cao, A. Mishchenko, G. L. Yu, E. Khestanova, A. P. Rooney, E. Prestat, A. V. Kretinin, P. Blake, M. B. Shalom, C. Woods, J. Chapman, G. Balakrishnan, I. V. Grigorieva, K. S. Novoselov, B. A. Piot, M. Potemski, K. Watanabe, T. Taniguchi, S. J. Haigh, A. K. Geim, R. V. Gorbachev, Nano Letters 15, 4914 (2015).

Effects of rare-earth size on the electronic structure of La1-xLuxVO3, B. Chen, J. Laverock, D. Newby, J. F. McNulty, K. E. Smith, P. A. Glans, J. H. Guo, R. M. Qiao, W. L. Yang, M. R. Lees, L. D. Tung, R. P. Singh, G. Balakrishnan, J. Phys.-Condens. Mat. 27, 105503 (2015).

Evidence of double-gap superconductivity in noncentrosymmetric Nb0.18Re0.82 single crystals, C. Cirillo, R. Fittipaldi, M. Smidman, G. Carapella, C. Attanasio, A. Vecchione, R. P. Singh, M. R. Lees, G. Balakrishnan, M. Cuoco, Phys. Rev. B 91, 134508 (2015).

Dispersionless Spin Waves and Underlying Field-Induced Magnetic Order in Gadolinium Gallium Garnet, N. d'Ambrumenil, O. A. Petrenko, H. Mutka, P. P. Deen, Phys. Rev. Lett. 114, 227203 (2015).

Magnetic excitation spectrum of LuFe2O4 measured with inelastic neutron scattering, S. M. Gaw, H. J. Lewtas, D. F. McMorrow, J. Kulda, R. A. Ewings, T. G. Perring, R. A. McKinnon, G. Balakrishnan, D. Prabhakaran, A. T. Boothroyd, Phys. Rev. B 91, 035103 (2015).

Growth of single-crystals of rare-earth zirconate pyrochlores, Ln2Zr2O7 (with Ln = La, Nd, Sm, and Gd) by the floating zone technique, M. C. Hatnean, M. R. Lees, G. Balakrishnan, J. Cryst. Growth 418, 1 (2015).

Structural and magnetic investigations of single-crystalline neodymium zirconate pyrochlore Nd2Zr2O7, M. C. Hatnean, M. R. Lees, O. A. Petrenko, D. S. Keeble, G. Balakrishnan, M. J. Gutmann, V. V. Klekovkina, B. Z. Malkin, Phys. Rev. B 91, 174416 (2015).

Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe2, S. Kumar, C. V. Tomy, G. Balakrishnan, D. M. Paul, A. K. Grover, J. Phys.-Condens. Mat. 27, 295701 (2015).

Enhanced electron correlations at the SrxCa1-xVO3 surface, J. Laverock, J. Kuyyalil, B. Chen, R. P. Singh, B. Karlin, J. C. Woicik, G. Balakrishnan, K. E. Smith, Phys. Rev. B 91, 165123 (2015).

Fluctuations and All-In-All-Out Ordering in Dipole-Octupole Nd2Zr2O7, E. Lhotel, S. Petit, S. Guitteny, O. Florea, M. C. Hatnean, C. Colin, E. Ressouche, M. R. Lees, G. Balakrishnan, Phys. Rev. Lett. 115, 197202 (2015).

Magnetic and spectral properties of the multisublattice oxides SrY2O4:Er3+ and SrEr2O4, B. Z. Malkin, S. I. Nikitin, I. E. Mumdzhi, D. G. Zverev, R. V. Yusupov, I. F. Gilmutdinov, R. Batulin, B. F. Gabbasov, A. G. Kiiamov, D. T. Adroja, O. Young, O. A. Petrenko, Phys. Rev. B 92, 094415 (2015).

Three-dimensional Ising critical behavior in R0.6Sr0.4MnO3 (R = Pr, Nd) manganites, A. Oleaga, A. Salazar, M. C. Hantean, G. Balakrishnan, Phys. Rev. B 92, 024409 (2015).

Hidden order in spin-liquid Gd3Ga5O12, J. A. M. Paddison, H. Jacobsen, O. A. Petrenko, M. T. Fernandez-Diaz, P. P. Deen, A. L. Goodwin, Science 350, 179 (2015).

Study of phase coexistence in YVO3 and LaVO3, B. Roberge, S. Jandl, A. A. Nugroho, T. T. M. Palstra, L. D. Tung, G. Balakrishnan, Journal of Raman Spectroscopy 46, 1157 (2015).

Raman spectroscopic studies of CuFeO2 at high pressures, N. P. Salke, K. Kamali, T. R. Ravindran, G. Balakrishnan, R. Rao, Vibrational Spectroscopy 81, 112 (2015).

Evidence for a hybridization gap in noncentrosymmetric CeRuSi3, M. Smidman, D. T. Adroja, E. A. Goremychkin, M. R. Lees, D. M. Paul, G. Balakrishnan, Phys. Rev. B 91, 064419 (2015).

Unconventional Fermi surface in an insulating state, B. S. Tan, Y. T. Hsu, B. Zeng, M. C. Hatnean, N. Harrison, Z. Zhu, M. Hartstein, M. Kiourlappou, A. Srivastava, M. D. Johannes, T. P. Murphy, J. H. Park, L. Balicas, G. G. Lonzarich, G. Balakrishnan, S. E. Sebastian, Science 349, 287 (2015).

List of collaborators who have made use of single crystals prepared as part of the EPSRC funded grant EP/M028771/1: Single Crystal Growth at Warwick - 2015 to 2018.
UK Collaborators:

1. Prof. P.D.C. King, Prof. P. Wahl, University of St Andrews.

2. Dr S. E. Sebastian, Dr M. Sutherland and Dr J. Cooper, Cavendish Lab, University of Cambridge.

3. Prof. S. Bramwell, University College London.

4. Dr S. R. Giblin, Cardiff University.

5. Dr D. T. Adroja, P. Manual, Dr D. Voneshen, Neutron Scattering group, ISIS STFC.

6. Dr P. K. Biswas, Dr A.D. Hillier, Muon group, ISIS STFC.

7. Prof. I. Grigorieva, Prof. Sir A. Geim and Prof. Sir K. Novoselov, Graphene Group, University of Manchester.

8. Dr R. Beanland and Prof. A. Sanchez, Microscopy Group, University of Warwick.

9. Dr J. A. Duffy, University of Warwick.

10. Dr G. Bell, University of Warwick.

11. Dr J. Laverock, University of Bristol.

12. Prof. D. Hampshire, University of Durham.

International Collaborators:

13. Dr Zherlitsyn, High Magnetic Field Lab., Dresden, Germany.

14. Prof. Lieh Jeng Chang, National Cheng Kung University, Taiwan.

15. Dr Pascale Deen, University of Lund, Sweden.

16. Dr A Vecchione and Dr R Fittipaldi, Dr M. Cuoco, Crystal Growth Lab, CNR SPIN, Salerno, Italy.

17. Dr C. Cirrilo, Dr C. Atanasio, Thin Films Group, CNR SPIN, Salerno, Italy.

18. Dr Vincent Hardy, CRISMAT, Caen, France.

19. Dr R. P. Singh, IISER Bhopal India.

20. Dr Z Salman, Dr J.A.T Barker, Muon Group, PSI, Switzerland.

21. Dr M. Kenzelmann and Dr R Sibille, Dr T Fennel, Dr O. Zaharko, Neutron Group, PSI Switzertland.

22. Dr E.L’Hotel, Inst. Neel, Grenoble, France.

23. Dr S Petit and Dr I Mirebeau, LLB, Saclay, France.

24. Dr C. Decorse, ICMMO, Univ Paris-Sud, Paris, France.

25. Dr E Kermerrec, NMR group, Univ Paris Sud, France.

26. Dr T. Benseman, CUNY, New York, USA.

27. Dr K. Maiti, TIFR ,Bombay, India.

28. Prof. C.V. Tomy, Indian Institute of Technology, Bombay, India.

29. Prof. A.I. Smirnov, Kapitza Institute for Physical problems, Moscow.

30. Prof. A. Bid, Indian Institute of Science, Bangalore, India.

31. Prof. K. E. Smith, Boston University, USA.

32. Dr Z.X. Cheng, Wollongong Univ, New Zealand.

33. Prof A. Oleaga, UPV EHU, Bilbao, Spain.

34. Prof. S. Jandl, Univ of Sherbrooke, Canada.

35. Dr Rekha Rao, BARC, India.

36. Dr M.Angst, Forschungszentrum Julich, Germany.

37. Dr M. Smidman, Zhejiang University, China.

38. Dr E. Pomjakushina, Solid State Chemistry Group, PSI, Switzerland.

39. Dr N. Shitselova, National Academy of Science, Ukraine.

40. Dr E. Abreu, ETH, Switzerland.

41. Dr C. Kurdak, University of Michigan, USA.

42. Dr E. Diez, University of Salamanca, Spain.

43. Dr K. Kobayashi, University of Okayama, Japan.

44. Dr A. Cameron and Dr D. Inosov, TU, Dresden, Germany.

45. Prof. Je-Geun Park, Seoul National University, Korea.

46. Prof. R. Averitt, University of California at San Diego, USA.

47. Dr Philippe Veber, CNRS, Bordeaux, France.

48. Prof. J. Kreisel, LIST, Luxembourg.

49. Dr M. Wanderoth, University of Gottingen, Germany.

50. Dr Yixi Su, JCNS Julich, Germany.

51. Prof. B.J. Kim, Poohang University, Korea.

52. Dr E.M. Bittar, CBPF, Brazil.

EP/I007210/1Link opens in a new window Single Crystal Growth at Warwick, January 2011 - December 2014

Exchange interactions in Ca3Co2O6 probed locally by NMR, G. Allodi, P. Santini, S. Carretta, S. Agrestini, C. Mazzoli, A. Bombardi, M. R. Lees, and R. De Renzi, Physical Review B 89, 104401 (2014).

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Low-temperature magnetic fluctuations in the Kondo insulator SmB6, P. K. Biswas, Z. Salman, T. Neupert, E. Morenzoni, E. Pomjakushina, F. von Rohr, K. Conder, G. Balakrishnan, M. Ciomaga Hatnean, M. R. Lees, D. McK. Paul, A. Schilling, C. Baines, H. Luetkens, R. Khasanov, and A. Amato, Physical Review B 89, 161107(R) (2014).

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Structural and magnetic properties of single-crystals of the geometrically frustrated zirconium pyrochlore, Pr2CuGe2O7, M. C. Hatnean, C. Decorse, M. R. Lees, O. A. Petrenko, D. S. Keeble, and G. Balakrishnan, Materials Research Express 1, 026109 (2014).

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Ultrasonic investigations of the spin ices Dy2Ti2O7 and Ho2Ti2O7 in and out of equilibrium, S. Erfanifam, S. Zherlitsyn, S. Yasin, Y. Skourski, J. Wosnitza, A. A. Zvyagin, P. McClarty, R. Moessner, G. Balakrishnan, and O. A. Petrenko, Physical Review B 90, 064409 (2014).

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Crystal growth and characterization of the non-centrosymmetric antiferromagnet Ba2CuGe2O7, R. Fittipaldi, L. Rocco, M. C. Hatnean, V. Granata, M. R. Lees, G. Balakrishnan, and A. Vecchione, Journal of Crystal Growth 404, 223 (2014).

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Giant frictional dissipation peaks and charge-density-wave slips at the NbSe2 surface, M. Langer, M. Kisiel, R. Pawlak, F. Pellegrini, G. E. Santoro, R. Buzio, A. Gerbi, G. Balakrishnan, A. Baratoff, E. Tosatti, and E. Meyer, Nature Materials 13, 173 (2014).

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Low-energy V t(2g) orbital excitations in NdVO3, J. Laverock, B. Chen, A. R. H. Preston, D. Newby, L. F. J. Piper, L. D. Tung, G. Balakrishnan, P. A. Glans, J. H. Guo, and K. E. Smith, Journal of Physics: Condensed Matter 26, 455603 (2014).

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Infrared phonon spectrum of the tetragonal helimagnet Ba2CuGe2O7, A. Nucara, W. S. Mohamed, L. Baldassarre, S. Koval, J. Lorenzana, R. Fittipaldi, G. Balakrishnan, A. Vecchione, and P. Calvani, Physical Review B 90, 014304 (2014).

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Magnetic susceptibility and heat capacity measurements of single crystal TbMnO3, D. O’Flynn, M. R. Lees, and G. Balakrishnan, Journal of Physics: Condensed Matter 26, 256002 (2014).

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Spin correlations in Ca3Co2O6 : Polarized-neutron diffraction and Monte Carlo study, J. A. M. Paddison, S. Agrestini, M. R. Lees, C. L. Fleck, P. P. Deen, A. L. Goodwin, J. R. Stewart, and O. A. Petrenko, Physical Review B 90, 014411 (2014).

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Low-temperature magnetism in the honeycomb systems SrLn2O4, O. A. Petrenko, Low Temperature Physics 40, 106 (2014).

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Synthesis and characterization of nanomaterials of the Topological Crystalline Insulator SnTe, M. Saghir, M. R. Lees, S. J. York, and G. Balakrishnan, Crystal Growth & Design 14, 2009 (2014).

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Superconducting properties of Sn1-xInxTe (x = 0.38-0.45) studied using muon-spin spectroscopy, M. Saghir, J. A. T. Barker, G. Balakrishnan, A. D. Hillier, and M. R. Lees, Physical Review B 90, 064508 (2014).

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Detection of time-reversal symmetry breaking in the noncentrosymmetric superconductor Re6Zr using muon-spin spectroscopy, R. P. Singh, A. D. Hillier, B. Mazidian, J. Quintanilla, J. F. Annett, D. McK. Paul, G. Balakrishnan, and M. R. Lees, Physical Review Letters 112, 107002 (2014).

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Crystal growth and properties of the non-centrosymmetric superconductor, Ru7B3, R. P. Singh, N. A. Parzyk, M. R. Lees, D. M. Paul, and G. Balakrishnan, Journal of Crystal Growth 395, 22 (2014).

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Probing the superconducting ground state of the noncentrosymmetric superconductors CaTSi3 (T = Ir, Pt) using muon-spin relaxation and rotation, R. P. Singh, A. D. Hillier, D. Chowdhury, J. A. T. Barker, D. M. Paul, M. R. Lees, and G. Balakrishnan, Physical Review B 90, 104504 (2014).

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Investigations of the superconducting states of noncentrosymmetric LaPdSi3 and LaPtSi3, M. Smidman, A. D. Hillier, D. T. Adroja, M. R. Lees, V. K. Anand, R. P. Singh, R. I. Smith, D. M. Paul, and G. Balakrishnan, Physical Review B 89, 094509 (2014).

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Electrical transport properties of CaB6, J. Stankiewicz, J. Sese, G. Balakrishnan, and Z. Fisk, Physical Review B 90, 155128 (2014).

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Magnetic properties of geometrically frustrated SrGd2O4, O. Young, G. Balakrishnan, M. R. Lees, and O. A. Petrenko, Physical Review B 90, 094421 (2014).

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Impact of the various spin- and orbital-ordering processes on the multiferroic properties of orthovanadate DyVO3, Q. Zhang, K. Singh, C. Simon, L. D. Tung, G. Balakrishnan, and V. Hardy, Physical Review B 90, 024418 (2014).

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2013

Superconducting properties of the In-substituted topological crystalline insulator SnTe, G. Balakrishnan, L. Bawden, S. Cavendish, and M. R. Lees, Physical Review B 87, 140507(R) (2013).

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The ac Josephson relation and inhomogeneous temperature distributions in large Bi2Sr2CaCu2O8+delta mesas for THz emission, T. M. Benseman, A. E. Koshelev, W. K. Kwok, U. Welp, K. Kadowaki, J. R. Cooper, G. Balakrishnan, Superconductor Science & Technology 26, 085016 (2013).

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Evolution of the electronic structure of HoB4 with temperature, D. Biswas, N. Sahadev, G. Adhikary, G. Balakrishnan, and K. Maiti, Physical Review B 88, 134405 (2013).

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Low-temperature muon spin rotation studies of the monopole charges and currents in Y doped Ho2Ti2O7, L. J. Chang, M. R. Lees, G. Balakrishnan, Y.-J. Kao, and A. D. Hillier, Scientific Reports 3, 1881 (2013).

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Magnetic field-induced ordering in SrDy2O4, T. H. Cheffings, M. R. Lees, G. Balakrishnan and O. A. Petrenko, Journal of Physics-Condensed Matter 25, 256001 (2013).

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Superconductivity in two-dimensional NbSe2 field effect transistors, M. S. El-Bana, D. Wolverson, S. Russo, G. Balakrishnan, D. M. Paul, S. J. Bending, Superconductor Science & Technology 26, 125020 (2013).

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Phase coexistence and magnetically tuneable polarization in cycloidal multiferroics, I. Fina, V. Skumryev, D. O’Flynn, G. Balakrishnan, and J. Fontcuberta, Physical Review B 88, 100403(2013).

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Large, high quality single-crystals of the new topological Kondo insulator, SmB6, M. C. Hatnean, M. R. Lees, D. M. K. Paul, G. Balakrishnan, Scientific Reports 3, 3071 (2013).

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k-resolved susceptibility function of 2H-TaSe2 from angle-resolved photoemission, J. Laverock, D. Newby, Jr., E. Abreu, R. Averitt, K. E. Smith, R. P. Singh, G. Balakrishnan, J. Adell, and T. Balasubramanian, Physical Review B 88, 035108 (2013).

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Resonant soft-X-Ray emission as a bulk probe of correlated electron behavior in metallic SrxCa1-xVO3, J. Laverock, B. Chen, K. E. Smith, R. P. Singh, G. Balakrishnan, M. Gu, J.W. Lu, S. A. Wolf, R. M. Qiao, W. Yang, and J. Adell, Physical Review Letters 111, 047402 (2013).

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Electronic structure of the kagome staircase compounds Ni3V2O8 and Co3V2O8, J. Laverock, B. Chen, A. R. H. Preston, K. E. Smith, N. R. Wilson, G. Balakrishnan, P. A. Glans, and J. H. Guo, Physical Review B 87, 125133 (2013).

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Low-temperature magnetisation process in the cubic pyrochlore quantum antiferromagnet, Er2Ti2O7, O. A. Petrenko, M. R. Lees, G. Balakrishnan, European Physical Journal B 86, 416 (2013).

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Juxtaposition of spin freezing and long range order in a series of geometrically frustrated antiferromagnetic gadolinium garnets, J. A. Quilliam, S. Meng, H. A. Craig, L. R. Corruccini, G. Balakrishnan, O. A. Petrenko, A. Gomez, S. W. Kycia, M. J. P. Gingras, and J. B. Kycia, Physical Review B 87, 174421 (2013).

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Strain coupling in multiferroic phase transitions of samarium yttrium manganite Sm0.6Y0.4MnO3, J. Schiemer, D. O’Flynn, G. Balakrishnan, and M. A. Carpenter, Physical Review B 88, 054108 (2013).

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Neutron scattering and muon spin relaxation measurements of the noncentrosymmetric antiferromagnet CeCoGe3, M. Smidman, D. T. Adroja, A. D. Hillier, L. C. Chapon, J. W. Taylor, V. K. Anand, R. P. Singh, M. R. Lees, E. A. Goremychkin, M. M. Koza, V. V. Krishnamurthy, D. M. Paul, G. Balakrishnan, Physical Review B 88, 134416 (2013).

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Complex spectral evolution in a BCS superconductor, ZrB12, S. Thakur, D. Biswas, N. Sahadev, P. K. Biswas, G. Balakrishnan, K. Maiti, Scientific Reports 3, 3342 (2013).

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Surface bulk differences in a conventional superconductor, ZrB12, S. Thakur, D. Biswas, N. Sahadev, P. K. Biswas, G. Balakrishnan, and K. Maiti, Journal of Applied Physics, 114, 053904 (2013).

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Highly frustrated magnetism in SrHo2O4: Coexistence of two types of short-range order, O. Young, A. R. Wildes, P. Manuel, B. Ouladdiaf, D. D. Khalyavin, G. Balakrishnan, O. A. Petrenko, Physical Review B 88, 024411 (2013).

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2012

Low temperature magnetic structure of geometrically frustrated SrHo2O4, O. Young, L. C. Chapon, and O. A. Petrenko, Journal of Physics Conference Series 391, 012081 (2012).

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Pinning Mechanism in Iron Chalcogenide Superconductor FeSe0.5Te0.5, A. D. Thakur, A. K. Yadav, P. Das, C. V. Tomy, M. R. Lees, G. Balakrishnan, S. Ramakrishnan, and A. K. Grover, in Solid State Physics, Pts 1 and 2, edited by R. Mittal, A. K. Chauhan and R. Mukhopadhyay, 1447, 897 (2012).

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Is CeCoSi3 a superconductor?, M. Smidman, R. P. Singh, M. R. Lees, D. M. Paul, D. T. Adroja, and G. Balakrishnan, Journal of Physics Conference Series 391, 012068, (2012).

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Magnetisation Studies of Geometrically Frustrated Antiferromagnets SrLn2O4, with Ln = Er, Dy, and Ho, T. J. Hayes, O. Young, G. Balakrishnan, and O. A. Petrenko, Journal of the Physical Society of Japan 81, 024708 (2012).

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First-order reorientation transition of the flux-line lattice in CaAlSi, P. K. Biswas, M. R. Lees, G. Balakrishnan, D. Q. Liao, D. S. Keeble, J. L. Gavilano, N. Egetenmeyer, C. D. Dewhurst, and D. M. Paul, Physical Review Letters 108, 077001 (2012).

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Magnetic phases in a Gd2Ti2O7 pyrochlore for a field applied along the [100] axis, O. A. Petrenko, M. R. Lees, G. Balakrishnan, V. N. Glazkov, and S. S. Sosin, Physical Review B 85, 180412(R) (2012).

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Comparative study of the centrosymmetric and noncentrosymmetric superconducting phases of Re3W using muon spin spectroscopy and heat capacity measurements, P. K. Biswas, A. D. Hillier, M. R. Lees, and D. M. Paul, Physical Review B 85, 134505 (2012).

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Controlling bulk conductivity in topological insulators: Key role of anti-site defects, D. O. Scanlon, P. D. C. King, R. P. Singh, A. de la Torre, S. McKeown Walker, G. Balakrishnan, Advanced Materials 24, 2154 (2012).

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Raman scattering study of delafossite magnetoelectric multiferroic compounds: CuFeO2 and CuCrO2, O. Aktas, K. D. Truong, T. Otani, G. Balakrishnan, M. J. Clouter, T. Kimura, and G. Quirion, Journal of Physics: Condensed. Matter 24, 036003 (2012).

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Crystal growth of the non-centrosymmetricsuperconductor Nb0.18Re0.82, R. P. Singh, M. Smidman, M. R. Lees, D. McK. Paul, G. Balakrishnan, Journal of Crystal Growth 361, 129 (2012).

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Emergent quantum confinement at topological insulator surfaces, M. S. Bahramy, P. D. C. King, A. de la Torre, J. Chang, M. Shi, L. Patthey, G. Balakrishnan, Ph. Hofmann, R. Arita, N. Nagaosa, and F. Baumberger, Nature Communications 3, 1159 (2012).

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2011

Unusual line shape of B 1s core level spectra in rare earth hexaborides, Swapnil Patil, Ganesh Adhikary, Geetha Balakrishnan, and Kalobaran Maiti, Solid State Communications 151, 326 (2011).

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On the growth and properties of high quality single crystals of the yttrium doped strontium cobaltates, Y1−xSrxCoO3-d (0.7&lt;x&lt;0.95), C. L. Fleck, G. Balakrishnan, and M.R. Lees, Journal of Materials Chemistry 21, 1212 (2011).

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Magnetic order in geometrically frustrated Gd2(Ti1−xZrx)2O7 (x = 0.02 and 0.15) single crystals, Da-qian Liao, M. R. Lees, D. W. Baker, D. McK. Paul, and G. Balakrishnan, Physical Review B 83, 064403 (2011).

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NMR study of magnetic order, metamagnetic transitions, and low-temperature spin freezing in Ca3Co2O6, G. Allodi, R. De Renzi, S. Agrestini, C. Mazzoli, and M. R. Lees, Physical Review B 83, 104408 (2011).

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Two-gap superconductivity in Lu2Fe3Si5: A transverse-field muon spin rotation study, P. K. Biswas, G. Balakrishnan, D. M. Paul, C. V. Tomy, M. R. Lees, and A.D. Hillier, Physical Review B 83, 054517 (2011).

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Slow magnetic order-order transition in the spin chain antiferromagnet Ca3Co2O6, S. Agrestini, C. L. Fleck, L. C. Chapon, C. Mazzoli, A. Bombardi, M. R. Lees, and O. A. Petrenko, Physical Review Letters 106, 197204, (2011).

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Titanium pyrochlore magnets: how much can be learned from magnetization measurements?, O. A. Petrenko, M. R. Lees and G. Balakrishnan, Journal of Physics: Condensed. Matter 23, 164218 (2011).

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Multiferroic properties and magnetic structure of Sm1−xYxMnO3, D. O’Flynn, C. V. Tomy, M. R. Lees, A. Daoud-Aladine, and G. Balakrishnan, Physical Review B 83, 174426 (2011).

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Coexistence of the long-range and short-range magnetic order components in SrEr2O4, T. J. Hayes, G. Balakrishnan, P. P. Deen, P. Manuel, L. C. Chapon, and O. A. Petrenko, Physical Review B 84, 174435 (2011).

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Structure and superconductivity in two different phases of Re3W, P. K. Biswas, M. R. Lees, A. D. Hillier, R. I. Smith, W. G. Marshall, and D. McK. Paul, Physical Review B 84, 184529 (2011).

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Large tunable Rashba spin splitting of a two-dimensional electron gas in Bi2Se3, P. D. C. King, R. C. Hatch, M. Bianchi, R. Ovsyannikov, C. Lupulescu, G. Landolt, B. Slomski, J. H. Dil, D. Guan, J. L. Mi, E. D. L. Rienks, J. Fink, A. Lindblad, S. Svensson, S. Bao, G. Balakrishnan, B. B. Iversen, J. Osterwalder, W. Eberhardt, F. Baumberger, and Ph. Hofmann, Physical Review Letters 107, 096802, (2011).

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Intrinsic and extrinsic nonstationary field-driven processes in the spin-ice compound Dy2Ti2O7, S. Erfanifam, S. Zherlitsyn, J. Wosnitza, R. Moessner, O. A. Petrenko, G. Balakrishnan, and A. A. Zvyagin Physical Review B 84, 220404 (2011).

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Magnetization hysteresis and time decay measurements in FeSe0.5Te0.50 : Evidence for fluctuation in mean free path induced pinning, P. Das, Ajay D. Thakur, Anil K. Yadav, C. V. Tomy, M. R. Lees, G. Balakrishnan, S. Ramakrishnan, and A. K. Grover, Physical Review B 84, 214526 (2011).

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Valency and spin states of substituent cations in Bi2.15Sr1.85CaCu2O8+δ, T. M. Benseman, J. R. Cooper, C. L. Zentile, L. Lemberger, and G. Balakrishnan, Physical Review B 84, 144503 (2011).

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Unusual spectral renormalization in hexaborides, Swapnil Patil, Ganesh Adhikary, G Balakrishnan and Kalobaran Maiti , Journal of Physics: Condensed. Matter 23, 495601 (2011).

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Crossover from paramagnetic compressed flux regime to diamagnetic pinned vortex lattice in a single crystal of cubic Ca3Rh4Sn13, P. D. Kulkarni, S. Banerjee, C. V. Tomy, G. Balakrishnan, D. McK. Paul, S. Ramakrishnan, and A. K. Grover, Physical Review B 84, 014501 (2011).

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The temperature evolution of the magnetic correlations in pure and diluted spin ice Ho2-xYxTi2O7, L. J. Chang, Y. Su, Y. -J. Kao, Y. Z. Chou, K. Kakurai, R. Mittal, H. Schneider, Th. Bruckel, G. Balakrishnan, and M. R. Lees, Physica B 406, 2393 (2011).

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EP/E011802/1Link opens in a new window Single Crystal Growth at Warwick, May 2007 - May 2010

2010

Muon-spin-spectroscopy study of the penetration depth of FeTe0.5Se0.5, P. K. Biswas, G. Balakrishnan, D. M. Paul, C. V. Tomy, M. R. Lees, and A. D. Hillier, Physical Review B 81, 092510 (2010).

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Magnetic correlations in the spin ice Ho2−xYxTi2O7 as revealed by neutron polarization analysis, L. J. Chang, Y. Su, Y.-J. Kao, Y. Z. Chou, R. Mittal, H. Schneider, Th. Brückel, G. Balakrishnan, and M. R. Lees, Physical Review B 82, 172403 (2010).

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Spin dynamics in the hyperkagome compound Gd3Ga5O12, P. P. Deen, O. A. Petrenko, G. Balakrishnan, B. D. Rainford, C. Ritter, L. Capogna, H. Mutka, and T. Fennell, Physical Review B 82, 174408 (2010).

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Field-driven magnetisation steps in Ca3Co2O6: A single-crystal neutron-diffraction study, C. L. Fleck, M. R. Lees, S. Agrestini, G. J. McIntyre, and O. A. Petrenko, EPL 90, 67006 (2010).

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Thermometers for low temperature magic angle spinning NMR, T. F. Kemp, G. Balakrishnan, K. J. Pike, M. E. Smith, and R. Dupree, Journal of Magnetic Resonance 204, 169 (2010).

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Influence of 4f electronic states on the surface states of rare-earth hexaborides, Swapnil Patil, Ganesh Adhikary, Geetha Balakrishnan, and Kalobaran Maiti, Applied Physics Letters 96, 092106 (2010).

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Kagome staircase compound Co3V2O8 in an applied magnetic field: Single-crystal neutron diffraction study, O. A. Petrenko, N. R. Wilson, G. Balakrishnan, D. McK Paul, and G. J. McIntyre, Physical Review B 82, 104409 (2010).

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Triangular lattice antiferromagnet RbFe(MoO4)2 , A. I. Smirnov, L. E. Svistov, L. A. Prozorova, O. A. Petrenko, and M. Hagiwara, Physics Uspekhi 53, 844 (2010).

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Magnetic excitations in the XY-pyrochlore antiferromagnet Er2Ti2O7, S. S. Sosin and L. A. Prozorova M. R. Lees, G. Balakrishnan, and O. A. Petrenko, Physical Review B 82, 094428 (2010).

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Damage evolution in Au-implanted Ho2Ti2O7 titanate pyrochlore, Yanwen Zhang, Jacek Jagielski, In-Tae Bae, Xia Xiang, Lionel Thomé, Geetha Balakrishnan, Don M. Paul, William J. Weber, Nuclear Instruments and Methods in Physics Research B 268, 3009 (2010).

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2009

Small-angle neutron scattering study of the vortex lattice in superconducting LuNi2B2C, J. M. Densmore, P. Das, K. Rovira, T. D. Blasius, L. DeBeer-Schmitt, N. Jenkins, D. M. Paul, C. D. Dewhurst, S. L. Bud'ko, P. C. Canfield, and M. R. Eskildsen, Physical Review B 79, 174522 (2009).

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Resonant X-ray scattering study of Ca3Co2O6 ground state: Preliminary results of magnetic field effects, C. Mazzoli, A. Bombardi, S. Agrestini, and M. R. Lees, Physica B-Condensed Matter 404, 3042-3044 (2009).

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Magnetic phase diagram of magnetoelectric CuFeO2 in high magnetic fields, G. Quirion, M. L. Plumer, O. A. Petrenko, G. Balakrishnan, and C. Proust, Physical Review B 80, 064420 (2009).

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Chiral and Collinear Ordering in a Distorted Triangular Antiferromagnet, A. I. Smirnov, L. E. Svistov, L. A. Prozorova, A. Zheludev, M. D. Lumsden, E. Ressouche, O. A. Petrenko, K. Nishikawa, S. Kimura, M. Hagiwara, K. Kindo, A. Y. Shapiro, and L. N. Demianets, Physical Review Letters 102, 037202 (2009).

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High quality single crystals of the SrR2O4 family of frustrated magnets, G. Balakrishnan, T. J. Hayes, O. A. Petrenko, and D. M. Paul, Journal of Physics-Condensed Matter 21, 012202 (2009).

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Low frequency spin dynamics of the frustrated pyrochlore magnet Gd2Ti2O7, A. I. Smirnov, S. S. Sosin, V. N. Glazkov, O. A. Petrenko, G. Balakrishnan, and M.E. Zhitomirsky, Journal of Physics: Conference Series 150, 042188 (2009).

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Field induced magnetic order in the frustrated magnet Gadolinium Gallium Garnet, O. A. Petrenko, G. Balakrishnan, D. McK. Paul, M. Yethiraj, G. J. McIntyre, and A. S. Wills, Journal of Physics: Conference Series 145,  012026 (2009).

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Magnetoelastic coupling in CuFeO2, G. Quirion, M. J. Tagore, M. L. Plumer, and O. A. Petrenko, Journal of Physics: Conference Series 145, 012070 (2009).

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2008

Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy, R. P. Prasankumar, H. J. Lee, H. Okamura, H. Imai, Y. Shimakawa, Y. Kubo, S. Zvyagin, K. V. Kamenev, G. Balakrishnan, D. M. Paul, S. A. Trugman, A. J. Taylor, R. D. Averitt, Physica B-Condensed Matter 403, 1401 (2008).

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Nature of the magnetic order in Ca3Co2O6, S. Agrestini, L. C. Chapon, A. Daoud-Aladine, J. Schefer, A. Gukasov, C. Mazzoli, M. R. Lees, O. A. Petrenko, Physical Review Letters  101, 097207 (2008).

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Spin, orbital ordering, and magnetic dynamics of LaVO3: Magnetization, heat capacity, and neutron scattering studies, L. D. Tung, A. Ivanov, J. Schefer, M. R. Lees, G. Balakrishnan, D. M. Paul, Physical Review B 78, 054416 (2008).

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Resonant x-ray scattering investigation of the multipolar ordering in Ca3Co2O6, A. Bombardi, C. Mazzoli, S. Agrestini, and M. R. Lees , Physical Review B 78 , 100406 (2008).

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Incommensurate magnetic ground state revealed by resonant x-ray scattering in the frustrated spin system Ca3Co2O6, S. Agrestini, C. Mazzoli, A. Bombardi, and M. R. Lees, Physical Review B 77, 140403 (2008).

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Evidence of soft modes in magnetoelectric CuFeO2: Ultrasonic velocity measurements and Landau theory, G. Quirion, M. J. Tagore, M. L. Plumer, O. A. Petrenko, Physical Review B 77, 094111 (2008).

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Spin dynamics of the pyrochlore magnets Gd2Ti2O7 and Gd2Sn2O7 in the paramagnetic state, S. S. Sosin, L. A. Prozorova, A. I. Smirnov, P. Bonville, G.L.J. Bras, and O.A. Petrenko, Physical Review B 77, 104424 (2008).

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Electronic texture of the thermoelectric oxide Na0.75CoO2, M. -H. Julien, C. de Vaulx, H. Mayaffre, C. Berthier, M. Horvatic, V. Simonet, J. Wooldridge, G. Balakrishnan, M. R. Lees, D. P. Chen, C. T. Lin, and P. Lejay, Physical Review Letters 100, 096405 (2008).

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In-plane oxygen diffusion in single crystals of Bi2Sr2CaCu2O8+delta, T. M. Benseman, J. R. Cooper, G. Balakrishnan, Physica C-Superconductivity and its Applications 468, 81 (2008).

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O. A. Petrenko, G. Balakrishnan, N. R. Wilson, S. de Brion, E. Suard, and L. C. Chapon, Physical Review B 78, 184410 (2008).

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