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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. McK. 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. McK. Paul, Physical Review B-Condensed Matter 59, 6043 (1999).
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Flux-line lattice structures in untwinned YBa2Cu3O7-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. 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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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.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, 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. Mc 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 TC superconductor, S.T. Johnson, P.D. Hatton , A.J.S. Chowdhury , J. Gardner , G. Balakrishnan, D.McK. 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, McK. Paul , 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-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 La2CoO4.15, 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.Mc 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 TC 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 Nd2-xCexCuO4, 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. McK. 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 Ho1-xYxNi2B2C compounds, L. J. Chang, C. V. Tomy, D. McK. 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. Mc 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 Bi2Sr2CaCu2O8+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.McK. 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. Mc K. Paul, Physica C 252, 303-307 (1995).
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Neutron Scattering From the Flux Line Lattice in Bi2Sr2CaCu2O8+d , D. McK. Paul, et al., Physica B 213, 107-109 (1995).
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Neutron Diffraction From HoNi2B2C, C. V. Tomy, L. J. Chang, D.McK. 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. McK. 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 Bi2.15Sr1.95CaCu2O8+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. McK. 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.McK. Paul, Physica C 235, 2705-2706 (1994).
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