High Temperature Superconductors GR/K2211

1999

Interaction between magnetic order and the vortex lattice in HoNi₂B₂C, C. D. Dewhurst, R. A. Doyle, E. Zeldov, D. M^cK. Paul, Physical Review Letters 82, 827 (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. M^cK. Paul, Physical Review B-Condensed Matter 59, 6043 (1999).

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Flux-line lattice structures in untwinned YBa₂Cu₃O_7-_d, 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. M^cK. 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. M^cK. 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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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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1998

Nonlocal effects and vortex lattice transitions in YNi₂B₂C, D.M^cK. 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. M^cK. Paul, Europhys. Lett. 44, 91 (1998).

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Observation of a square flux-line lattice in the unconventional superconductor Sr₂RuO_4, T.M. Riseman, P.G. Kealey, E.M. Forgan, A.P. Mackenzie, L.M. Galvin, A.W. Tyler, S.L. Lee, C. Ager, D.M^cK. Paul, C.M. Aegerter, R. Cubitt, Z.Q. Mao, T. Akima, 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 , S. Bhattacharya, Physica C 299, 267 (1998).

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Square flux lines in YNi₂B₂C, M. Yethiraj, D. M^c K. Paul, C. V. Tomy, J. R. Thompson, Physical Review B-Condensed Matter 58, 14767 (1998).

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Effect of annealing upon the high T_C superconductor, S.T. Johnson, P.D. Hatton , A.J.S. Chowdhury , J. Gardner , G. Balakrishnan, D.M^cK. Paul , 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, M^cK. Paul , M.J. Higgins, Physica C 308, 25 (1998).

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Observation of vortex lattice melting in twinned YBa₂Cu₃O_7-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-Condensed Matter 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).

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Observation of the peak effect in the superconductor Ca₃Rh₄Sn₁₃, C. V. Tomy, G. Balakrishnan, D. M. Paul, Physical Review B-Condensed Matter56, 8346 (1997).

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

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Neutron diffraction study of a La₂CoO_4.15, Single Crystal, J. S. Gardner, D. M. Paul, 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, 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, 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.M^c K. 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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Thermodynamic evidence for reentrant peak effect in a clean single crystal of 2H-NbSe₂ and the effect of disorder and thermomagnetic history on it, S. S. Banerjee, et al., Physica C 282, 2027 (1997).

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1996

Classification of the interlayer coupling in high T_C cuprates from low-field magnetization studies, N. E. Hussey, et al., Physical Review B-Condensed Matter 53, 6752-6758 (1996).

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Reentrant peak effect via magnetization studies in NbSe₂, S. Ramakrishnan, et al., Czechoslovak Journal of Physics 46 , 3105-3106 (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, 483-488 (1996).

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Magnetic properties of single crystal TbNi₂B₂C, C. V. Tomy, J. M. Martin, D. M. Paul, Physica B 224, 116-118 (1996).

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A neutron study of the flux lattice in the superconductor CeRu₂, A. Huxley, et al., Physica B 224, 169-171 (1996).

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High resolution neutron scattering study of low-energy magnetic excitations in Nd_2-xCe_xCuO₄, M. Loewenhaupt, et al., Annalen Der Physik 5, 197-202 (1996).

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Magnetic structure of TmNi₂B₂C, L. J. Chang, C. V. Tomy, D. M^cK. Paul, C. Ritter, Physical Review B-Condensed Matter 54, 9031-9034 (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, 1685-1686 (1996).

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Neutron diffraction studies of Ho_1-xY_xNi₂B₂C compounds, L. J. Chang, C. V. Tomy, D. M^cK. Paul, N. H. Andersen, M. Yethiraj, Physica B 224, 119-122 (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, 119-141 (1996).

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Neutron diffraction and magnetisation studies of Sr₂RuO₄ below 2 K, J. S. Gardner, G. Balakrishnan, D. M^c K. Paul, C. Haworth, Physica C 265, 251-257 (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-Condensed Matter 53, 14611-14620 (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, 841-842 (1996).

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Andreev-reflection study of superconducting RNi₂B₂C compounds, L. F. Rybaltchenko, et al., Physica B 218 , 189-192 (1996).

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Superconducting and magnetic properties of DyNi₂B₂C single crystals, C. V. Tomy, M. R. Lees, G. Balakrishnan, D. T. Adroja, D. M. K. Paul, Physica B 224, 62-65 (1996).

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Anisotropic magnetic properties of TbNi₂B₂C single crystals, C. V. Tomy, et al., Physical Review B-Condensed Matter , 53 , 307-312 (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, 4600-4603 (1996).

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Magnetic order in HoNiBC and ErNiBC, L. J. Chang, C. V. Tomy, D. M. K. Paul, N. H. Andersen, M. Yethiraj, Journal of Physics-Condensed Matter 8 , 2119-2125 (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-Condensed Matter 53, 14594-14600 (1996).

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1995

Observation of Superconductivity At 6 K in DyNi₂B₂C, C. V. Tomy, G. Balakrishnan, D. Mc K. Paul, Physica C 248, 349-352 (1995).

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Vortex-Chain State in Bi₂Sr₂CaCu₂O_8+d- Experimental-Evidence For Coexistence of 2 Vortex Orientations, I. V. Grigorieva, J. W. Steeds, G. Balakrishnan, D. McK Paul, Physical Review B-Condensed Matter 51, 3765-3771 (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, D.M^cK. Paul, Superconductor Science & Technology 8, 605-612 (1995).

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Neutron Powder Diffraction Studies of Sr₂RuO₄ and SrRuO₃, J. S. Gardner, G. Balakrishnan, D. M^c K. Paul, Physica C 252, 303-307 (1995).

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Neutron Scattering From the Flux Line Lattice in Bi₂Sr₂CaCu₂O₈₊_d , D. M^cK. Paul, et al., Physica B 213, 107-109 (1995).

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Neutron Diffraction From HoNi₂B₂C, C. V. Tomy, L. J. Chang, D.M^cK. Paul, N. H. Andersen, M. Yethiraj, Physica B 213, 139-141 (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 , 136-138 (1995).

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Josephson Coupling, Inplane Pinning, and Vortex Dimensionality in Bi₂Sr₂CaCu₂O₈₊ _d, R. A. Doyle, et al., Physical Review B-Condensed Matter 51, 9368-9371 (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, D. M^cK. Paul, Physical Review B-Condensed Matter 52, 9186-9189 (1995).

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1994

Small-Angle Neutron-Scattering Study of the Flux-Line-Lattice in a Single-Crystal of Bi_2.15Sr_1.95CaCu₂O₈₊_d, M. Yethiraj, et al., Journal of Applied Physics 76, 6784-6787 (1994).

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Small-Angle Neutron-Diffraction Studies of Vortex Structures in High Temperature Superconductors, R. Cubitt, et al., Physica C 235 , 2583-2584 (1994).

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Superconductivity in RNi₂B₂C (R=Rare Earth) Compounds, C. V. Tomy, L. J. Chang, G. Balakrishnan, D. M^cK. Paul, Physica C 235, 2551-2552 (1994).

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Flux-Pinning and the Irreversibility Line in Bi₂Sr₂CaCu₂O₈ Single- Crystals, A. A. Elabbar, et al., Physica B 194, 1887-1888 (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, 1885-1886 (1994)

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Superconducting Properties of Doped and Off-Stoichiometric Bi₂Sr₂CaCu₂O₈ Single Crystals, G. Balakrishnan, D.McK. Paul, M. R. Lees, Physica B 194, 2197-2198 (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, D. M ^cK. Paul, Physica C 226, 288-292 (1994)

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Heat-Capacity of the Crystal-Field Effects in the ErNi₂B₂C Compound, L. Afalfiz, et al., Physica C 235, 2555-2556 (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, D.M^cK. Paul, Physica C 235, 2705-2706 (1994).

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