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Superconducting Systems: Publications

Work on superconductors including non-centrosymmetric, oxide, and chalcogenide systems.

2018

Superconductivity in Ru0.55Rh0.5P and Ru0.75Rh0.25As probed by muon spin relaxation and rotation measurements, V. K. Anand, D. T. Adroja, M. R. Lees, P. K. Biswas, A. D. Hillier, and B. Lake, Physical Review B 98, 214517 (2018).

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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, and R. P. Singh, Physical Review B 98, 104506 (2018).

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Probing the superconducting ground state of the rare-earth ternary boride superconductors RRuB2 (R = Lu, Y) using muon-spin rotation and relaxation, J. A. T. Barker, R. P. Singh, A. D. Hillier, and D. M. Paul, Physical Review B 97, 094506 (2018).

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Temperature and field dependence of the intrinsic tunnelling structure in overdoped Bi2Sr2CaCu2O8+δ, T. M. Benseman, J. R. Cooper, and G. Balakrishnan, Physical Review B 98, 014507 (2018).

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Multigap superconductivity in chiral noncentrosymmetric TaRh2B2, D. A. Mayoh, A. D. Hillier, K. Götze, D. M. Paul, G. Balakrishnan, and M. R. Lees, Physical Review B 98, 014502 (2018).

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Time-Reversal Symmetry Breaking in Re-Based Superconductors, T. Shang, M. Smidman, S. K. Ghosh, C. Baines, L. J. Chang, D. J. Gawryluk, J. A. T. Barker, R. P. Singh, D. M. Paul, G. Balakrishnan, E. Pomjakushina, M. Shi, M. Medarde, A. D. Hillier, H. Q. Yuan, J. Quintanilla, J. Mesot, and T. Shiroka, Physical Review Letters 121, 257002 (2018).

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Superconducting properties and μSR study of the noncentrosymmetric superconductor Nb0.5Os0.5, D. Singh, J. A. T. Barker, A. Thamizhavel, A. D. Hillier, D. M. Paul, and R. P. Singh, Journal of Physics: Condensed Matter 30, 075601 (2018).

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Time-reversal symmetry breaking in the noncentrosymmetric superconductor Re6Ti, D. Singh, S. K. P, J. A. T. Barker, D. M. Paul, A. D. Hillier, and R. P. Singh, Physical Review B 97, 100505 (2018).

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2017

Nodal superconducting gap structure in the quasi-one-dimensional Cs2Cr3As3 investigated using μSR measurements, D. Adroja, A. Bhattacharyya, M. Smidman, A. Hillier, Y. Feng, B. Pan, J. Zhao, M. R. Lees, A. Strydom, and P. K. Biswas, Journal of the Physical Society of Japan 86, 044710 (2017).

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Signatures of the Kondo effect in VSe2, S. Barua, M. C. Hatnean, M. R. Lees, and G. Balakrishnan, Scientific Reports 7, 10964 (2017).

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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, and Z. Salman, Physical Review B 95, 020410(R) (2017).

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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, and A. Bid, Physical Review B 95, 205403 (2017).

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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, and M. R. Lees, Physical Review B 96, 064521 (2017).

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Broken rotational symmetry on the Fermi surface of a high-Tc superconductor, B. J. Ramshaw, N. Harrison, S. E. Sebastian, S. Ghannadzadeh, K. A. Modic, D. A. Bonn, W. N. Hardy, R. Liang, and P. A. Goddard, npj Quantum Materials 2, 8 (2017).

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Time-reversal symmetry breaking in the noncentrosymmetric superconductor Re6Hf: Further evidence for unconventional behavior in the alpha-Mn family of materials, D. Singh, J. A. T. Barker, A. Thamizhavel, D. M. Paul, A. D. Hillier, and R. P. Singh, Physical Review B 96, 180501 (2017).

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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, and P. D. C. King, Nature Commununications 7, 11711 (2016).

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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, and K. E. Smith, Physical Review B 93, 075132 (2016).

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SnTe microcrystals: Surface cleaning of a topological crystalline insulator, M. Saghir, M. Walker, C. F. McConville, and G. Balakrishnan, Applied Physics Letters 108, 061602 (2016).

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2015

F. R. Foronda et al. PRB 92 134517 (2015).  J. A. T. Barker et al. PRL 115 267001 (2015) D. C. Green et al. Advanced Functional Materials 25 4700 (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, and R. P. Singh, Physical Review Letters 115, 267001 (2015).

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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, and M. Cuoco, Physical Review B 91, 134508 (2015).

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Robustness of superconductivity to structural disorder in Sr0.3(NH2)yNH3(1-y)Fe2Se2, F. R. Foronda, S. Ghannadzadeh, S. J. Sedlmaier, J. D. Wright, K. Burns, S. J. Cassidy, P. A. Goddard, T. Lancaster, S. J. Clarke, and S. J. Blundell, Physical Review B 92, 134517 (2015).

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On the Mechanism of Cuprate Crystal Growth: The Role of Mixed Metal Carbonates, D. C. Green, R. Boston, S. Glatzel, M. R. Lees, S. C. Wimbush, J. Potticary, W. Ogasawara, and S. R. Hall, Advanced Functional Materials 25, 4700 (2015).

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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, and A. K. Grover, Journal of Physics - Condensed. Matter 27, 295701 (2015).

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2014

P.K. Biswas et al. PRB 90 144505 (2014). <  M. Saghir et al. Crystal Growth and Design 14, 2009 (2014). S. E. Sebastian et al. Nature 511, 61 (2014).


Superconducting and magnetic properties of Sr3Ir4Sn13, P. K. Biswas, A. Amato, R. Khasanov, H. Luetkens, K. F. Wang, C. Petrovic, R. M. Cook, M. R. Lees, and E. Morenzoni, Physical Review B 90, 144505 (2014).

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Upper critical field of NaFe1-xCoxAs superconductors, S. Ghannadzadeh, J. D. Wright, F. R. Foronda, S. J. Blundell, S. J. Clarke, and P. A. Goddard, Physical Review B 89, 054502 (2014).

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Normal-state nodal electronic structure in underdoped high-Tc copper oxides, Suchitra E. Sebastian, N. Harrison, F. F. Balakirev, M. M. Altarawneh, P. A. Goddard, Ruixing Liang, D. A. Bonn, W. N. Hardy and G. G. Lonzarich, Nature 511, 61 (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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2013


Designed 3D architectures of high-temperature superconductors, D. C. Green, M. R. Lees, and S. R. Hall, Chemical Commununications 49, 2974 (2013).

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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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Evidence for superconductivity with broken time-reversal symmetry in locally noncentrosymmetric SrPtAs, P. K. Biswas, H. Luetkens, T. Neupert, T. Sturzer, C. Baines, G. Pascua, A. P. Schnyder, M. H. Fischer, J. Goryo, M. R. Lees, H. Maeter, F. Bruckner, H.-H. Klauss, M. Nicklas, P. J. Baker, A. D. Hillier, M. Sigrist, A. Amato, and D. Johrendt, Physical Review B 87, 180503(R) (2013).

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2012

Biswas et al.

Superconductivity1

A new stoichiometry of cuprate nanowires, J. Konne, S. A. Davis, S. Glatzel, M. R. Lees, and S. R. Hall, Superconductor Science & Technology 25, 115005 (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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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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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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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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2011


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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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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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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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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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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2010

Densmore et al. Biswas et al.

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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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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2008


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

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2007


Superconducting properties of W7Re13B compound, B. Andrzejewski, A. Kowalczyk, A. Jezierski, M. R. Lees and G. Chelkowska, Journal of Alloys and Compounds 442, 225 (2007).

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Magnetic, transport and high-pressure properties of a W7Re13B superconducting compound, B. Andrzejewski, A. Kowalczyk, A. Jezierski, and M. R. Lees, Superconductor Science and Technology 20, 728 (2007).

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2006

Yethiraj et al. Yethiraj et al.


Muon spin rotation measurements on LaNiSn, A. J. Drew, S. L. Lee, F. Y. Ogrin, D. Charalambous, N. Bancroft, D. M. Paul, T. Takabatake, and C. Baines, Physica B 374, 270 (2006).

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Pulverization of the flux line lattice, the phase coexistence and the spinodal temperature of the order-disorder transition in a weakly pinned crystal of Yb3Rh4Sn13 S. Sarkar, C. V. Tomy, A. D. Thakur et al. Pramana-Journal of Physics 66, 179 (2006).

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Critical points in the Bragg glass phase of a weakly pinned crystal of Ca3Rh4Sn13, S. Sarkar, A. D. Thakur, C. V. Tomy et al., Pramana-Journal of Physics 66, 193 Sp. Iss. Si Jan (2006).

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2005


Temperature and field dependence of the flux-line-lattice symmetry in V3Si, M. Yethiraj, D. K. Christen, A. A. Gapud, D. M. Paul, S. J. Crowe, C. D. Dewhurst, R. Cubitt, L. Porcar, and A. Gurevich, Physical Review B 72, 060504 (2005).

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Investigation of the spin density wave in NaxCoO2, J. Wooldridge, D. M. Paul, G. Balakrishnan, and M. R. Lees, Journal of Physics: Condensed Matter 17, 707 (2005).

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Vortex-lattice symmetry near T-c in YNi2B2C, C. D. Dewhurst, S. J. Levett, and D. M. Paul, Physical Review B 72, 014542 (2005).

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2003


Magnetism and superconductivity in CeMIn5 (M = Rh, Co) single crystals, S. Majumdar, G. Balakrishnan, M. R. Lees, and D. M. Paul, Acta Physica Polonica B, 1043 (2003).

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Small-angle neutron scattering studies of vortex lattice morphology in YNi2B2C, C. D. Dewhurst, S. J. Levett, and D. M. Paul, Physica C 388, 189 (2003).

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Anisotropic low-field behavior and the observation of flux jumps in CeCoIn5, S. Majumdar, M. R. Lees, G. Balakrishnan, and D. M. Paul, Physical Review B 68, 012504 (2003).

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Complementary study of heat capacity and magnetization for intermetallic YNi2B2C single crystal, K. J. Song, C. Park, S. S. Oh, Y. K. Kwon, J. R. Thompson, D. G. Mandrus, D. M. Paul, and C. V. Tomy, Physica C 398, 107 (2003).

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2002

superconductivity3.png  Forgan et al.

Intrinsic behavior of flux lines in pure niobium near the upper critical field, E. M. Forgan, S. J. Levett, P. G. Kealey, R. Cubitt, C. D. Dewhurst, D. Fort, Physical Review Letters 88, 167003 (2002).

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Comparison of the history effects in magnetization in weakly pinned crystals of high T-c and low T-c superconductors, D. Pal, S. Sarkar, A. Tulapurkar, S. Ramakrishnan, A. K. Grover, G. Ravikumar, D. Dasgupta, B. K. Sarma, C.V. Tomy, G. Balakrishnan, and D. M. Paul, Superconductor Science & Technology 15, 254 (2002).

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Vortex phase diagrams in R3Rh4Sn13 (R Yb;Ca), C. V. Tomy, S. Sarkar, S. Ramakrishnan, A. K. Grover, G. Balakrishnan, and D. McK. Paul, Physica B 312-313, 145 (2002).

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Pressure induced change in the magnetic modulation of CeRhIn5, S. Majumdar, G. Balakrishnan, M. R. Lees, D. M. Paul, and G. J. McIntyre, Physical Review B 66, 212502 (2002).

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Vortex-Lattice transitions in YNi2B2C, Nature of the 45-degree reorientation, S.J. Levett, C.D. Dewhurst, and D.M. Paul, Physical Review B 66, 014515 (2002). Full Text PDF: Download (200 kB)


Magnetism and superconductivity in ErNi2B2C, N. J. Bancroft, D. M. Paul, G. McIntyre, C. D. Dewhurst, and R. Cubitt, Pramana Journal of Physics 58, 907 (2002).

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Vortex Lattice transitions in YNi2B2C, S. J. Levett, C. D. Dewhurst, and D. M. Paul, Pramana Journal of Physics 58, 913 (2002).

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Study of the peak effect phenomenon in single crystals of 2H-NbSe2, C. V. Tomy, D. Pal, S.S. Banerjee, S. Ramakrishnan, A.K. Grover, S. Bhattacharya, M.J. Higgins, G. Balakrishnan, and D.M. Paul, Pramana Journal of Physics 58, 925 (2002).

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Comparison of thermomagnetic history effects in weakly pinned single crystals of R3Rh4Sn13 (R = Yb, Ca), S. Sarkar, S. Ramakrishnan, A. K. Grover, C. V. Tomy, G. Balakrishnan, and D. M. Paul, Pramana Journal of Physics 58, 979 (2002).

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2001


Multiple magnetization peaks in weakly pinned Ca3Rh4Sn13 and YBa2Cu3O7-delta, S. Sarkar, D. Pal, P. L. Paulose, S. Ramakrishnan, A. K. Grover, C. V. Tomy, D. Dasgupta, B. K. Sarma, G. Balakrishnan, and D. M. Paul, Physical Review B 64, 144510 (2001).

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Transverse-field components of the flux-line lattice in the anisotropic superconductor YBa2Cu3O7-delta, P. G. Kealey, D. Charalambous, E. M. Forgan, S. L. Lee, S. T. Johnson, P. Schleger, R. Cubitt, D. M. Paul, C. M. Aegerter, S. Tajima, and A. Rykov, Physical Review B 64, 174501 (2001).

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Peak effect in Ca3Rh4Sn13: Vortex phase diagram and evidences for stepwise amorphization of flux line, S. Sarkar, S. S. Banerjee, A. K. Grover, S. Ramakrishnan, S. Bhattacharya, G. Ravikumar, P. K. Mishra, V. C. Sahni, C. V. Tomy, D. M. Paul, G. Balakrishnan, and M. J. Higgins, Physica C 341, 1085 (2001).

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Magnetic twin boundries and flux pinning in the antiferromagnetic superconductor ErNi2B2C, N. Saha, R. Surdeanu, M. Marchevsky, G. J. Nieuwenhuys, C.D. Dewhurst, R. J. Wijngaarden, D. M. Paul, and P. H. Kes, Physical Review B 63, 020502 (2001).

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Vortex pinning by magnetic order in ErNi2B2C, C. D. Dewhurst, S. S. James, J. A. Doyle, Y. Paltiel, H. Shtrikman, E. Zeldov, and D. M. Paul. Physical Review B 63, 060501 (2001).

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Equilibrium basal-plane magnetization of superconductive YNi2B2C: The influence of nonlocal electrodynamics, J. R. Thompson. A. V. Silhanek, L. Civale, H. J. Song, C. V. Tomy, and D. M. Paul, Physical Review B 64, 024510 (2001).

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The second magnetization peak and the peak effect phenomenon in the superconductor Ca3Rh4Sn13, S. Sarkar, P. L. Paulose, S. Ramakrishnan, A. K. Grover, C. V. Tomy, G. Balakrishnan, and D. M. Paul, Physica C 356, 191 (2001).

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Influence of nonlocal electrodynamics on the anisotropic vortex pinning in YNi2B2C, A. V. Silhanek, J. R. Thompson, L. Civale, D. M. Paul, and C. V. Tomy, Physical Review B 64, 012512 (2001).

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Flux Pinning mechanisms in ErNi2B2C, S. S. James, C. D. Dewhurst, S. B. Field, D. M. Paul, Y. Paltiel, H. Shtrikman, E. Zeldov, and A. M. Campbell, Physical Review B 64, 092512 (2001).

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2000

Johnson et al. Huxley et al. Huxley et al.


Reconstruction from Small-Angle Neutron Scattering Measurements of the Real Space, Magnetic Field Distribution in the Mixed State of Sr2RuO4, P. G. Kealey, T. M. Riseman, E. M. Forgan, L. M. Galvin, A. P. Mackenzie, S. L. Lee, D. Mc K. Paul, R. Cubitt, D. F. Agterberg, R. Heeb, Z. Q. Mao, and Y. Maeno, Physical Review Letters 84, 6094 (2000).

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Electron quasiarticle interaction in DyNi2B2C measured by Point-contact spectroscopy of I. K. Yanson, N. L. Bobrov, C. V. Tomy, and D. McK.Paul, Physica C 334, 152 (2000).

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Point-contact spectroscopy of superconducting energy gap in DyNi2B2C, I. K. Yanson, N.L. Bobrov, C. V. Tomy, D. McK. Paul, Physica C 334, 33 (2000).

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Non-local superconductivity and the vortex-state properties of YNi2B2C, K. J. Song, J. R. Thompson, M. Yethiraj, D. K. Christen, D. Mandrus, C. V. Tomy, and D. McK. Paul, Physica B 284, 777 (2000).

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Stability and metastability of disordered vortex phases, S. S. Banerjee, S. Ramakrishnan, A. K. Grover, G. Ravikumar, P. K. Mishra, V. C. Sahni, C. V. Tomy, G. Balakrishnan, D. McK.Paul, M.J. Higgins, and S. Bhattacharya, PhysicaC 332, 135 (2000).

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Flux pinning, surface and geometrical barriers in YNi2B2C, S. S. James, C. D. Dewhurst, R. A. Doyle, D.Mc K. Paul, Y. Paltiel, E. Zeldov, and A. M. Campbell, Physica C 332, 173 (2000).

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Stepwise amorphization of the flux-line lattice in Ca3Rh4Sn13: A peak-effect study, S. Sarkar, D. Pal, S. S. Banerjee, S. Ramakrishnan, A. K. Grover, C. V.Tomy, G. Ravikumar, P. K Mishra, V. C.Sahni, G. Balakrishnan, D. McK. Paul, and S. Bhattacharya, Physical Review B 61, 12394 (2000).

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Neutron-diffraction study of the metamagnetic phases in HoNi2B2C, A. J. Campbell, D. McK. Paul, and G. J. McIntyre, Physical Review B 61, 5872 (2000).

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Neutron diffraction study of metamagnetic phases in ErNi2B2C, A. J. Campbell, D. McK. Paul, and G. J. McIntyre, Solid State Communications 115, 213 (2000).

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Elucidation of amorphization of flux line lattice in Yb3Rh4Sn13, S. Sarkar, S. S. Banerjee, A. K. Grover, S. Ramakrishnan, S. Bhattacharya, G. Ravikumar, P. K. Mishra, V. C. Sahn, C. V. Tomy, D. M. Paul, G. Balakrishnan, and M. G. Higgins, Physica C 341, 1055 (2000).

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Non-local superconductivity and the vortex-state properties of YNi2B2C, K. J. Song, J. R. Thompson, M. Yethiraj, D. K. Christen, D. Mandrus, C. V. Tomy, and D. M. Paul, Physica B 284, 777 (2000).

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Point-contact spectroscopy of superconducting energy gap in DyNi2B2C, I. K. Yanson, N. L. Bobrov, C. V. Tomy, and D. M. Paul, Physica C, 334, 33 (2000).

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Electron-quasiparticle interaction in DyNi2B2C measured by point-contact spectroscopy, I. K. Yanson, N. L. Bobrov, C. V. Tomy, and D. M. Paul, Physica C, 334, 152 (2000).

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Neutron diffraction study of metamagnetic phases in ErNi2B2C, A. J. Campbell, D. M. Paul, and G. J. McIntyre, Solid State Communications, 115, 213 (2000).

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Peak effect, plateau effect, and fishtail anomaly: The reentrant amorphization of vortex matter in 2H-NbSe2, S.S. Banerjee, S. Ramakrishnan, A. K. Grover, G. Ravikumar, P. K. Mishra, C. V. Sahni, C. V. Tomy, G. Balakrishnan, D. M. Paul, P. L. Gammel, D. J. Bishop, E. Bucher, M. J. Higgins, and S. Bhattacharya, Physical Review B, 62, 11838 (2000).

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Realignment of the flux-line lattice by a change in the symmetry of superconductivity in UPt3, A. Huxley, P. Rodiere, D. M. Paul, N. van Dijk, R. Cubbit, and J. Flouquet, Nature 406 160 (2000).

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1999


Flux pinning in RNi2B2C superconductors, C. D. Dewhurst, R. A. Doyle, E. Zeldov, D. McK. Paul, "Physics and Materials Science of Vortex States, Flux Pinning and Dynamics", ed. R. Kossowsky, Kluwer Academic Publishers, 265, (1999).

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Flux lattice symmetry in V3Si : Non-local effects in a high K superconductor, M. Yethiraj, D. K. Christen, D. M cK. Paul, P. Miranovic, and J.R. Thompson, Physical Review Letters 82, 5112 (1999).

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A low field study of the flux line lattice in CeRu2, A. Huxley, N. H. van Dijk, D. McK. Paul, R. Cubitt, and P. Lejay, Physica B 261, 696 (1999).

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Disorder, metastability, and history dependence in transformations of a vortex lattice, S. Banerjee, N. G. Patil, S. Ramakrishnan, and A. K. Grover S. Bhattacharya, P. K. Mishra, G. Ravikumar, T. V. Chandrasekhar Rao, and V. C. Sahni, M. J. Higgins, C. V. Tomy, G. Balakrishnan, and D. McK. Paul, Physical Review B-Condensed Matter 59, 6043 (1999).

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Flux-line lattice structures in untwinned YBa2Cu3O7-, S. T. Johnson, E. M. Forgan, S. H. Lloyd, C. M. Aegerter, S. L. Lee, R. Cubitt, P. G. Keeley, C. Ager, S. Tajima, A. Rykov, and D. McK.Paul, Physical Review Letters 82, 2792 (1999).

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Fluxoids and neutron polarisation effects, E.M. Forgan, P.G. Kealey, T. M. Riseman, S. L. Lee, D. McK. Paul, C. M. Aegerter, R. Cubitt, P. Schleger, A. Pautrat, Ch. Simon, and S. T. Johnson, Physica B 268, 115 (1999).

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Nonlocal current-field relation and the vortex-state magnetic properties of YNi2B2C, K. J. Song, J. R. Thompson, M. Yethiraj, D. K. Christen, C. V. Tomy, and D. McK. Paul, Physical Review B-Condensed Matter 59, R6620 (1999)

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Elastic properties of superconducting stannides: Yb3Rh4Sn13 and Ca3Rh4Sn13, A. Haas et al. Journal of Low Temperature Physics 114, 285 (1999).

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Interaction between magnetic order and the vortex lattice in HoNi2B2C, C. D. Dewhurst, R. A. Doyle, E. Zeldov, and D. McK. Paul, Physical Review Letters 82, 827 (1999).

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Point-contact study of the magnetic superconductor HoNi2B2C, L.F. Rybaltchenko, A. G. M. Jansen, P. Wyder, L. V. Tjutrina, P. C. Canfield, C. V. Tomy, and D. McK.Paul, Physica C 319, 189 (1999) .

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Fourfold basal plane anisotropy of the nonlocal magnetisation of YNi2B2C, L. Civale, A. V. Silhanek, J. R. Thompson, K. J. Song, C. V. Tomy, and D. McK. Paul, Physical Review Letters 83, 3920 (1999).

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Nonlocal effects in the superconductor (YNi2B2C)-B-11, M. Yethiraj, H. Kawano, D. McK. Paul, C. V. Tomy, H. Takeya, and H. Yoshizawa, Journal of Physics and Chemistry of Solids 60, 1059 (1999).

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1998


Nonlocal effects and vortex lattice transitions in YNi2B2C, D. McK. Paul, C. V. Tomy, C. M. Aegerter, R. Cubitt, S. H. Lloyd, E. M. Forgan, S. L. Lee, and M. Yethiraj, Physical Review Letters 80, 1517 (1998).

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Re-entrant peak effect in an anisotropic superconductor 2H-NbSe2: Role of disorder, S. S. Banerjee, N.G. Patil, , S. Ramakrishnan, A.K. Grover, S. Bhattacharya, K. Mishra, G. Ravikumar, T. V. Chandrasekhar Rao, V. C. Sahni , M. J. Higgins, C. V. Tomy, G. Balakrishnan, and D. McK. Paul, Europhys. Lett. 44, 91 (1998).

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Observation of a square flux-line lattice in the unconventional superconductor Sr2RuO4, T. M. Riseman, P. G. Kealey, E. M. Forgan, A. P. Mackenzie, L. M. Galvin, A. W. Tyler, S. L. Lee, C. Ager, D. McK. Paul, C. M. Aegerter, R. Cubitt, Z. Q. Mao, T. Akima, and Y. Maeno, Nature 396, 242 (1998).

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Muon spin rotation evidence for loss of order in the flux line lattice in the peak effect region in 2H-NbSe2, T. V. Chandrasekhar Rao, V. C. Sahni, P. K. Mishra, G. Ravikumar, C. V. Tomy, G. Balakrishnan, D. M cK. Paul, C. A. Scott, S. S. Banerjee, N. G. Patil, Subir Saha, S. Ramakrishnan, A. K. Grover, and S. Bhattacharya, Physica C 299, 267 (1998).

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Square flux lines in YNi2B2C, M. Yethiraj, D. Mc K. Paul, C. V. Tomy, and J. R. Thompson, Physical Review B 58, 14767 (1998).

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Effect of annealing upon the high TC superconductor, S. T. Johnson, P. D. Hatton , A. J. S. Chowdhury , J. Gardner, G. Balakrishnan, D. McK. Paul , and J. Hodby, Bi2Sr2CaCu 2O8+d, Physica C 299, 240 (1998).

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Generic phase diagram for vortex matter via a study of peak effect phenomenon in crystals of 2H-NbSe2, S. S. Banerjee , S. Saha , N. G. Patil , S. Ramakrishnan , A. K. Grover, S. Bhattacharya, G. Ravikumar, P. K. Mishra, T. V. C. Rao, V. C. Sahni, C. V. Tomy, G. Balakrishnan, D. McK. Paul, and M. J. Higgins, Physica C 308, 25 (1998).

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Observation of vortex lattice melting in twinned YBa2Cu3O7-x using neutron small-angle scattering, S. T. Johnson, W. J. Nuttall, S. H. Lloyd, M. T. Wylie, M. P. Nutley, E. M. Forgan, R. Cubitt, S. L. Lee, D. McK. Paul, M. Yethiraj, and H. A. Mook, Physical Review B 57, 14511 (1998).

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1997


Observation of electron-phonon interaction with soft phonons in superconducting RNi2B2C, I. K. Yanson et al., Physical Review Letters 78, 935 (1997). Full Text PDF: Download (153 kB)


Observation of the peak effect in the superconductor Ca3Rh4Sn13, C. V. Tomy, G. Balakrishnan, and D. M. Paul, Physical Review B 56, 8346 (1997).

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The nature of magnetic ordering in TbNi2B2, C.V. Tomy, L. J. Chang, D. M. Paul, and C. Ritter, Physica B 230, 872 (1997).

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Neutron diffraction study of a La2CoO4.15, Single Crystal, J. S. Gardner, D. M. Paul, and B. Lebech, Physica B 234, 721 (1997).

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Neutron scattering study of the flux lattice in YNi2B2C, M. Yethiraj, D. M. Paul, C. V. Tomy, and E. M. Forgan, Physical Review Letters 78, 4849 (1997).

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Magnetic phase diagram of anisotropic superconductor 2H-NbSe2S. S. Banerjee et al., Physica B 237, 315 (1997).

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Regions of enhanced pinning in the mixed state of the superconductor Yb3Rh4Sn13, C. V. Tomy, G. Balakrishnan, and D. M. Paul, Physica C 280, 1 (1997).

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Effect of columnar defects on the vortex dynamics in BSCCO 2212 single crystals, J. T. Totty, L. F. Cohen, G. K. Perkins, K. Kadowaki, G. Wirth D.McK. Paul, and G. Balakrishnan, Physica C 28, 2187 (1997).

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Point-contact-spectroscopy evidence of quasi-particle interactions in RNi2B2C (R=Ho, Y), I. K. Yanson et al., Low Temperature Physics 23, 712 (1997).

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1996


Classification of the interlayer coupling in high TC cuprates from low-field magnetization studies, N. E. Hussey et al., Physical Review B 53, 6752 (1996).

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Reentrant peak effect via magnetization studies in NbSe2, S. Ramakrishnan et al., Czechoslovak Journal of Physics 46 , 3105 (1996).

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Two superconducting states of HoNi2B2C as seen by Andreev reflection in point-contacts, L. F. Rybaltchenko et al., Europhysics Letters 33, 483 (1996).

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Magnetic properties of single crystal TbNi2B2C, C. V. Tomy, J. M. Martin, and D. M. Paul, Physica B 224, 116 (1996).

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A neutron study of the flux lattice in the superconductor CeRu2, A. Huxley et al., Physica B 224, 169 (1996).

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High resolution neutron scattering study of low-energy magnetic excitations in Nd2-xCexCuO4, M. Loewenhaupt et al., Annalen Der Physik 5, 197 (1996).

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Magnetic structure of TmNi2B2C, L. J. Chang, C. V. Tomy, D. McK. Paul, and C. Ritter, Physical Review B 54, 9031 (1996).

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Correlated disorder and scaling in single crystals of BSCCO 2212, J. T. Totty et al., Czechoslovak Journal of Physics 46, 1685 (1996).

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Neutron diffraction studies of Ho1-xYxNi2B2C compounds, L. J. Chang, C. V. Tomy, D. McK. Paul, N. H. Andersen, and M. Yethiraj, Physica B 224, 119 (1996).

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On the magnetic study of the peak effect in the anisotropic superconductor 2H-NbSe2 - Evidence for reentrant behavior, S. Ramakrishnan et al., Physica C 256, 119 (1996).

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Neutron diffraction and magnetisation studies of Sr2RuO4 below 2 K, J. S. Gardner, G. Balakrishnan, D. Mc K. Paul, and C. Haworth, Physica C 265, 251 (1996).

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Influence of columnar defects on vortex dynamics in Bi2Sr2CaCu2O8 from out-of-plane and flux transformer transport measurements, W. S. Seow et al., Physical Review B 53, 14611 (1996).

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Point-contact spectroscopy of electron-phonon interaction in superconducting RNi2B2C (R=Y, Ho), I. K. Yanson et al., Czechoslovak Journal of Physics 46, 841 (1996).

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Andreev-reflection study of superconducting RNi2B2C compounds, L. F. Rybaltchenko et al., Physica B 218 , 189 (1996).

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Superconducting and magnetic properties of DyNi2B2C single crystals, C. V. Tomy, M. R. Lees, G. Balakrishnan, D. T. Adroja, and D. M. Paul, Physica B 224, 62 (1996).

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Anisotropic magnetic properties of TbNi2B2C single crystals, C. V. Tomy et al., Physical Review B 53, 307 (1996).

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Reentrant peak effect and melting of a flux line lattice in 2H-NbSe2, K. Ghosh et al., Physical Review Letters 76, 4600 (1996).

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Magnetic order in HoNiBC and ErNiBC, L. J. Chang, C. V. Tomy, D. M. Paul, N. H. Andersen, and M. Yethiraj, Journal of Physics-Condensed Matter 8, 2119 (1996).

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Determination of the onset of bulk pinning and the low-temperature- irreversibility line in Bi2Sr2CaCu2O8+ d, C. D. Dewhurst et al., Physical Review B 53, 14594 (1996).

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1995


Observation of Superconductivity At 6 K in DyNi2B2C, C. V. Tomy, G. Balakrishnan, and D. Mc K. Paul, Physica C 248, 349 (1995).

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Vortex-Chain State in Bi2Sr2CaCu2O8+d- Experimental-Evidence For Coexistence of 2 Vortex Orientations, I. V. Grigorieva, J. W. Steeds, G. Balakrishnan, and D. McK Paul, Physical Review B 51, 3765 (1995).

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Direct Observation of Vortex Pinning By Dislocations in Bi2Sr2CaCu2O8 Single-Crystals, K. E. Bagnall, I. V. Grigorieva, J. W. Steeds, G. Balakrishnan, and D.McK. Paul, Superconductor Science & Technology 8, 605 (1995).

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Neutron Powder Diffraction Studies of Sr2RuO4 and SrRuO3, J. S. Gardner, G. Balakrishnan, and D. Mc K. Paul, Physica C 252, 303 (1995).

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Neutron Scattering From the Flux Line Lattice in Bi2Sr2CaCu2O8+d , D. McK. Paul et al., Physica B 213, 107 (1995).

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Neutron Diffraction From HoNi2B2C, C. V. Tomy, L. J. Chang, D. McK. Paul, N. H. Andersen, and M. Yethiraj, Physica B 213, 139 (1995).

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The Effect of Magnetic-Ordering On the Crystal-Field Levels of ErNi2B2C, J. S. Gardner et al., Physica B 213, 136 (1995).

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Josephson Coupling, In plane Pinning, and Vortex Dimensionality in Bi2Sr2CaCu2O8+ d, R. A. Doyle et al., Physical Review B 51, 9368 (1995).

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Vortex Dynamics and Melting in Niobium - Comment, E. M. Forgan et al., Physical Review Letters 74, 1697 (1995).

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Superconductivity and Magnetism in DyNi2B2C Single-Crystals, C. V. Tomy, M. R. Lees, L. Afalfiz, G. Balakrishnan, and D. McK. Paul, Physical Review B 52, 9186 (1995).

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1994


Small-Angle Neutron-Scattering Study of the Flux-Line-Lattice in a Single-Crystal of Bi2.15Sr1.95CaCu2O8+d, M. Yethiraj et al., Journal of Applied Physics 76, 6784 (1994).

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Small-Angle Neutron-Diffraction Studies of Vortex Structures in High Temperature Superconductors, R. Cubitt et al., Physica C 235 , 2583 (1994).

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Superconductivity in RNi2B2C (R=Rare Earth) Compounds, C. V. Tomy, L. J. Chang, G. Balakrishnan, and D. McK. Paul, Physica C 235, 2551 (1994).

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Flux-Pinning and the Irreversibility Line in Bi2Sr2CaCu2O8 Single- Crystals, A. A. Elabbar et al., Physica B 194, 1887 (1994).

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Magnetic Measurements On Tl-2212 and Bi-2212 Single-Crystals - a Comparative-Study, M. Oussena et al., Physica B 194, 1885 (1994).

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Superconducting Properties of Doped and Off-Stoichiometric Bi2Sr2CaCu2O8 Single Crystals, G. Balakrishnan, D. McK. Paul, and M. R. Lees, Physica B 194, 2197 (1994).

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Superconducting Properties of Ba(Pb, Bi)O3 Single-Crystals and Melt- Processed (Ba, K)BiO3, M. Grumann, G. Balakrishnan, C. V. Tomy, and D. M cK. Paul, Physica C 226, 288 (1994).

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Heat-Capacity of the Crystal-Field Effects in the ErNi2B2C Compound, L. Afalfiz et al., Physica C 235, 2555 (1994).

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Evidence of the Coexistence of 2 Vortex Orientations in Tilted Magnetic-Fields in Bi2Sr2CaCu2O8+d, I. V. Grigorieva, J. W. Steeds, G. Balakrishnan, and D. McK. Paul, Physica C 235, 2705 (1994).

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