Superconducting Systems: Publications

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

2022

D. G. C. Jonas et al. Quantum muon diffusion and the preservation of time-reversal symmetry in the superconducting state of type-I rhenium, Physical Review B 105, L020503 (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, and D. T. Adroja, Nodeless time-reversal symmetry breaking in the centrosymmetric superconductor Sc₅Co₄Si₁₀ probed by muon-spin spectroscopy, Physical Review Materials 6, 064802 (2022).

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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, and D. S. Inosov, Singlet-triplet mixing in the order parameter of the noncentrosymmetric superconductor Ru₇B₃, Physical Review B 105, 094519 (2022).

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Y. Fang, G. Grissonnanche, A. Legros, S. Verret, F. Laliberté, C. Collignon, A. Ataei, M. Dion, J. Zhou, D. Graf, M. J. Lawler, P. A. Goddard, L. Taillefer, and B. J. Ramshaw, Fermi surface transformation at the pseudogap critical point of a cuprate superconductor, Nature Physics 18, 558 (2022).

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D. G. C. Jonas, P. K. Biswas, A. D. Hillier, D. A. Mayoh, and 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).

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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, and D. Aoki, Pairing symmetry of an intermediate valence superconductor CeIr₃ investigated using muSR measurements, Physical Review B 103, 104514 (2021).

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

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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. Wang, and C. Jin, Probing the superconducting gap structure in the noncentrosymmetric topological superconductor ZrRuAs, Physical Review B 103, 144516 (2021).

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Physical Review B: Editors' Suggestion

L. S. Farrar, A. Nevill, Z. J. Lim, G. Balakrishnan, S. Dale, and S. J. Bending, Superconducting quantum interference in twisted van der Waals heterostructures, Nano Letters 21 , 6725 (2021).

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D. A. Mayoh, A. D. Hillier, G. Balakrishnan, and 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).

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2020

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

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

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

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Coexistence of type-I and type-II superconductivity signatures in ZrB₁₂ probed by muon spin rotation measurements, 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, and D.M. Paul, Physical Review B 102, 144523 (2020).

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2019

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

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

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

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

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2018

Superconductivity in Ru_0.55Rh_0.5P and Ru_0.75Rh_0.25As 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 Bi₂Sr₂CaCu₂O_8+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 Nb_0.5Os_0.5, 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

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 Nb_0.18Re_0.82 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 Sr_0.3(NH₂)_yNH_3(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

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 NaFe_1-xCo_xAs 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 Sn_1-xIn_xTe (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

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 FeSe_0.5Te_0.5, 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 Nb_0.18Re_0.82, 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 FeSe_0.5Te_0.50: 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 Bi_2.15Sr_1.85CaCu₂O_8+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

Muon-spin-spectroscopy study of the penetration depth of FeTe_0.5Se_0.5, 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 Bi₂Sr₂CaCu₂O_8+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

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 Na_xCoO₂, 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

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)Link opens in a new window

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 YBa₂Cu₃O_7-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 YBa₂Cu₃O_7-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

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. M^cK.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. M^cK. 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. M^cK.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.M^c 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. M^cK. 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. M^cK. 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. M^cK. 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-_, 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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Interaction between magnetic order and the vortex lattice in HoNi₂B₂C, C. D. Dewhurst, R. A. Doyle, E. Zeldov, and D. M^cK. 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. M^cK.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. M^cK. 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. 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, 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. M^c 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 T_C superconductor, S. T. Johnson, P. D. Hatton , A. J. S. Chowdhury , J. Gardner, G. Balakrishnan, D. M^cK. 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. M^cK. Paul, and 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 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)Link opens in a new window

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 La₂CoO_4.15, 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.M^cK. 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 T_C 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 Nd_2-xCe_xCuO₄, 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. M^cK. 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 Ho_1-xY_xNi₂B₂C compounds, L. J. Chang, C. V. Tomy, D. M^cK. 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. M^c 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. M^c K. Paul, Physica C 248, 349 (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, 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.M^cK. 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. M^c K. Paul, Physica C 252, 303 (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 (1995).

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Neutron Diffraction From HoNi₂B₂C, C. V. Tomy, L. J. Chang, D. M^cK. 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. M^cK. 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 Bi_2.15Sr_1.95CaCu₂O₈₊_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. M^cK. 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. M^cK. Paul, Physica C 235, 2705 (1994).

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