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Huddart BM, Onuorah IJ, Isah MM, Bonfà P, Blundell SJ, Clark SJ, De Renzi R, Lancaster T. Intrinsic Nature of Spontaneous Magnetic Fields in Superconductors with Time-Reversal Symmetry Breaking. PHYSICAL REVIEW LETTERS 2021; 127:237002. [PMID: 34936766 DOI: 10.1103/physrevlett.127.237002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/27/2021] [Accepted: 10/27/2021] [Indexed: 06/14/2023]
Abstract
We present a systematic investigation of muon-stopping states in superconductors that reportedly exhibit spontaneous magnetic fields below their transition temperatures due to time-reversal symmetry breaking. These materials include elemental rhenium, several intermetallic systems, and Sr_{2}RuO_{4}. We demonstrate that the presence of the muon leads to only a limited and relatively localized perturbation to the local crystal structure, while any small changes to the electronic structure occur several electron volts below the Fermi energy, leading to only minimal changes in the charge density on ions close to the muon. Our results imply that the muon-induced perturbation alone is unlikely to lead to the observed spontaneous fields in these materials, whose origin is more likely intrinsic to the time-reversal symmetry-broken superconducting state.
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Affiliation(s)
- B M Huddart
- Department of Physics, Centre for Materials Physics, Durham University, Durham DH1 3LE, United Kingdom
| | - I J Onuorah
- Department of Mathematical, Physical and Computer Sciences, University of Parma, 43124 Parma, Italy
| | - M M Isah
- Department of Mathematical, Physical and Computer Sciences, University of Parma, 43124 Parma, Italy
| | - P Bonfà
- Department of Mathematical, Physical and Computer Sciences, University of Parma, 43124 Parma, Italy
| | - S J Blundell
- Department of Physics, Clarendon Laboratory, Oxford University, Parks Road, Oxford OX1 3PU, United Kingdom
| | - S J Clark
- Department of Physics, Centre for Materials Physics, Durham University, Durham DH1 3LE, United Kingdom
| | - R De Renzi
- Department of Mathematical, Physical and Computer Sciences, University of Parma, 43124 Parma, Italy
| | - T Lancaster
- Department of Physics, Centre for Materials Physics, Durham University, Durham DH1 3LE, United Kingdom
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2
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Emulating spin transport with nonlinear optics, from high-order skyrmions to the topological Hall effect. Nat Commun 2021; 12:1092. [PMID: 33597504 PMCID: PMC7889664 DOI: 10.1038/s41467-021-21250-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 11/20/2020] [Indexed: 11/30/2022] Open
Abstract
Exploring material magnetization led to countless fundamental discoveries and applications, culminating in the field of spintronics. Recently, research effort in this field focused on magnetic skyrmions – topologically robust chiral magnetization textures, capable of storing information and routing spin currents via the topological Hall effect. In this article, we propose an optical system emulating any 2D spin transport phenomena with unprecedented controllability, by employing three-wave mixing in 3D nonlinear photonic crystals. Precise photonic crystal engineering, as well as active all-optical control, enable the realization of effective magnetization textures beyond the limits of thermodynamic stability in current materials. As a proof-of-concept, we theoretically design skyrmionic nonlinear photonic crystals with arbitrary topologies and propose an optical system exhibiting the topological Hall effect. Our work paves the way towards quantum spintronics simulations and novel optoelectronic applications inspired by spintronics, for both classical and quantum optical information processing. Control of effective magnetization textures like skyrmions is limited by the thermodynamic stability in current materials. Here, the authors propose a 3D nonlinear photonic crystal to emulate 2D spin transport phenomena with excellent controllability.
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Moroz AN, Kashurnikov VA, Rudnev IA, Maksimova AN. Modeling of vortex dynamics in HTSs with defects under the impact of pulsed magnetic field. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:145902. [PMID: 33461185 DOI: 10.1088/1361-648x/abdce7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
By means of the Monte Carlo method, a numerical study of the vortex system in a high-temperature superconductor under the impact of pulses of magnetic field has been conducted. Various shapes and amplitudes of pulses have been considered. Samples with random and regular distributions of three different numbers of defects have been compared from the viewpoint of efficiency of flux trapping. The low-temperature behavior of vortices and their penetration into samples have been shown to be independent of the pulse shape but strongly dependent of the type of pinning distribution. Saturating dependences of density of trapped magnetic flux on the pulse amplitude have been obtained. The samples with random pinning demonstrated higher efficiency of flux trapping at lower pulse amplitudes, and the samples with a triangular lattice of defects-at higher amplitudes. If the amplitude exceeded the saturation field of both samples, the trapped field was almost equal. The increasing number of defects has lead to an increase in trapped field within the considered range of concentrations.
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Affiliation(s)
- A N Moroz
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe sh. 31, 115409 Moscow, Russia
| | - V A Kashurnikov
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe sh. 31, 115409 Moscow, Russia
| | - I A Rudnev
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe sh. 31, 115409 Moscow, Russia
| | - A N Maksimova
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe sh. 31, 115409 Moscow, Russia
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Toft-Petersen R, Abrahamsen AB, Balog S, Porcar L, Laver M. Decomposing the Bragg glass and the peak effect in a Type-II superconductor. Nat Commun 2018; 9:901. [PMID: 29500437 PMCID: PMC5834466 DOI: 10.1038/s41467-018-03267-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 02/01/2018] [Indexed: 11/09/2022] Open
Abstract
Adding impurities or defects destroys crystalline order. Occasionally, however, extraordinary behaviour emerges that cannot be explained by perturbing the ordered state. One example is the Kondo effect, where magnetic impurities in metals drastically alter the temperature dependence of resistivity. In Type-II superconductors, disorder generally works to pin vortices, giving zero resistivity below a critical current jc. However, peaks have been observed in the temperature and field dependences of jc. This peak effect is difficult to explain in terms of an ordered Abrikosov vortex lattice. Here we test the widespread paradigm that an order-disorder transition of the vortex ensemble drives the peak effect. Using neutron scattering to probe the vortex order in superconducting vanadium, we uncover an order-disorder transition from a quasi-long-range-ordered phase to a vortex glass. The peak effect, however, is found to lie at higher fields and temperatures, in a region where thermal fluctuations of individual vortices become significant. The disordering of the vortex lattice in a type-II superconductor is widely perceived to underpin unusual peaks in the temperature and field dependence of critical current. By contrast, here Toft-Petersen et al. find an order-disorder transition in a superconducting vanadium sample that is unconnected with peaks observed in critical current.
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Affiliation(s)
- Rasmus Toft-Petersen
- Department of Physics, Technical University of Denmark (DTU), DK-2800, Kongens Lyngby, Denmark.,Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, D-14109, Berlin, Germany
| | - Asger B Abrahamsen
- Department of Wind Energy, Technical University of Denmark (DTU), DK-4000, Roskilde, Denmark
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | - Lionel Porcar
- Institut Laue-Langevin, 6 rue Jules Horowitz, 38042, Grenoble Cedex 9, France
| | - Mark Laver
- School of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
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Demirdiş S, van der Beek CJ, Mühlbauer S, Su Y, Wolf T. SANS study of vortex lattice structural transition in optimally doped (Ba1-x K x )Fe2As2. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:425701. [PMID: 27541966 DOI: 10.1088/0953-8984/28/42/425701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Small-angle neutron scattering on high quality single crystalline Ba1-x K x Fe2As2 reveals the transition from a low-field vortex solid phase with orientational order to a vortex polycrystal at high magnetic field. The vortex order-disorder transition is correlated with the second-peak feature in isothermal hysteresis loops, and is interpreted in terms of the generation of supplementary vortex solid dislocations. The sharp drop of the structure factor above the second peak field is explained by the dynamics of freezing of the vortex ensemble in the high field phase.
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Affiliation(s)
- S Demirdiş
- Jülich Center for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstrasse 1, D-85747 Garching, Germany
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Heron DOG, Ray SJ, Lister SJ, Aegerter CM, Keller H, Kes PH, Menon GI, Lee SL. Muon-spin rotation measurements of an unusual vortex-glass phase in the layered superconductor Bi2.15Sr1.85CaCu2O8+δ. PHYSICAL REVIEW LETTERS 2013; 110:107004. [PMID: 23521284 DOI: 10.1103/physrevlett.110.107004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Indexed: 06/01/2023]
Abstract
Muon-spin rotation measurements, performed on the mixed state of the classic anisotropic superconductor Bi(2.15)Sr(1.85)CaCu(2)O(8+δ), obtain quantities directly related to two- and three-body correlations of vortices in space. A novel phase diagram emerges from such local probe measurements of the bulk, revealing an unusual glassy state at intermediate fields which appears to freeze continuously from the equilibrium vortex liquid but differs both from the lattice and the conventional high-field vortex glass state in its structure.
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Affiliation(s)
- D O G Heron
- School of Physics and Astronomy, University of St Andrews, Fife KY16 9SS, United Kingdom
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7
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Baker PJ, Lancaster T, Blundell SJ, Pratt FL, Brooks ML, Kwon SJ. Tuning the interlayer spacing of high-T_{c} Bi-based superconductors by intercalation: measuring the penetration depth and the two-dimensional superfluid density. PHYSICAL REVIEW LETTERS 2009; 102:087002. [PMID: 19257777 DOI: 10.1103/physrevlett.102.087002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Indexed: 05/27/2023]
Abstract
Substantial control of the interlayer spacing in Bi-based high temperature superconductors has been achieved through the intercalation of guest molecules between the superconducting layers. Measurements using implanted muons reveal that the penetration depth increases with increasing layer separation while T_{c} does not vary appreciably, demonstrating that the bulk superfluid density is not the determining factor controlling T_{c}. Our results strongly suggest that for Bi-based high temperature superconductors the superfluid density appearing in the Uemura scaling relation rho_{s} proportional, variantT_{c} should be interpreted as the two-dimensional density within the superconducting layers, which we find to be constant for each class of system investigated.
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Affiliation(s)
- P J Baker
- Department of Physics, Oxford University, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, United Kingdom
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8
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Khasanov R, Kondo T, Strässle S, Heron DOG, Kaminski A, Keller H, Lee SL, Takeuchi T. Evidence for a competition between the superconducting state and the pseudogap state of (BiPb)2(SrLa)2CuO6+delta from muon spin rotation experiments. PHYSICAL REVIEW LETTERS 2008; 101:227002. [PMID: 19113513 DOI: 10.1103/physrevlett.101.227002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2008] [Indexed: 05/27/2023]
Abstract
The in-plane magnetic penetration depth lambda ab in optimally doped (BiPb)2(SrLa)2CuO6+delta (OP Bi2201) was studied by means of muon-spin rotation. The measurements of lambda ab(-2)(T) are inconsistent with a simple model of a d-wave order parameter and a uniform quasiparticle weight around the Fermi surface. The data are well described assuming the angular gap symmetry obtained in ARPES experiments [Phys. Rev. Lett. 98, 267004 (2007)], which suggest that the superconducting gap in OP Bi2201 exists only in segments of the Fermi surface near the nodes. The remaining parts of the Fermi surface, which are strongly affected by the pseudogap state, do not contribute significantly to the superconducting condensate.
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Affiliation(s)
- R Khasanov
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
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9
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Blundell SJ. Muon-Spin Rotation Studies of Electronic Properties of Molecular Conductors and Superconductors. Chem Rev 2004; 104:5717-36. [PMID: 15535666 DOI: 10.1021/cr030632e] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen J Blundell
- Department of Physics, Oxford University, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom.
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10
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Divakar U, Drew AJ, Lee SL, Gilardi R, Mesot J, Ogrin FY, Charalambous D, Forgan EM, Menon GI, Momono N, Oda M, Dewhurst CD, Baines C. Direct observation of the flux-line vortex glass phase in a type II superconductor. PHYSICAL REVIEW LETTERS 2004; 92:237004. [PMID: 15245190 DOI: 10.1103/physrevlett.92.237004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2003] [Indexed: 05/24/2023]
Abstract
The order of the vortex state in La1.9Sr0.1CuO4 is probed using muon-spin rotation and small-angle neutron scattering. A transition from a Bragg glass to a vortex glass is observed, where the latter is composed of disordered vortex lines. In the vicinity of the transition the microscopic behavior reflects a delicate interplay of thermally induced and pinning-induced disorder.
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Affiliation(s)
- U Divakar
- School of Physics and Astronomy, University of St. Andrews, St. Andrews, Fife KY16 9SS, United Kingdom
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11
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Nicodemi M. Peak effect in a driven lattice gas model. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 67:041103. [PMID: 12786343 DOI: 10.1103/physreve.67.041103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2002] [Indexed: 05/24/2023]
Abstract
We study the peak effect (PE), i.e., a sharp peak observed in the critical current as a function of the particle density, discovered in transport properties of a driven lattice gas model. We show that the PE corresponds to a first-order phase transition found in the undriven system at equilibrium, which in turn gives rise to an "anomalous" second peak in magnetic hysteresis loops. We also explain the "history" dependent phenomena observed in the PE region by investigating the system characteristic time scales, which diverge at low T and have a broad maximum as a function of the external field around the PE. The model we consider can be related to a coarse grained description of vortex lines in superconductors and we discuss the relations of the PE described here and the one experimentally observed in these systems.
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Affiliation(s)
- Mario Nicodemi
- Dipartimento di Fisica, Università Federico II, INFM and INFN, Via Cintia, 80126 Napoli, Italy
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12
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Kalvius G, Noakes D, Hartmann O. Chapter 206 μSR studies of rare-earth and actinide magnetic materials. HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS 2001. [DOI: 10.1016/s0168-1273(01)32005-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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13
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Olson CJ, Zimányi GT, Kolton AB, Grønbech-Jensen N. Static and dynamic coupling transitions of vortex lattices in disordered anisotropic superconductors. PHYSICAL REVIEW LETTERS 2000; 85:5416-5419. [PMID: 11136010 DOI: 10.1103/physrevlett.85.5416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2000] [Indexed: 05/23/2023]
Abstract
We use three-dimensional molecular dynamics simulations of magnetically interacting pancake vortices to study vortex matter in disordered, highly anisotropic materials such as BSCCO. We observe a sharp 3D-2D transition from vortex lines to decoupled pancakes as a function of relative interlayer coupling strength, with an accompanying large increase in the critical current reminiscent of a second peak effect. We find that decoupled pancakes, when driven, simultaneously recouple and order into a crystalline-like state at high drives. We construct a dynamic phase diagram and show that the dynamic recoupling transition is associated with a double peak in dV/dI.
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Affiliation(s)
- C J Olson
- Department of Physics, University of California, Davis, California 95616, USA
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14
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Giller D, Shaulov A, Tamegai T, Yeshurun Y. Transient vortex states in Bi2Sr2CaCu2O(8+delta) crystals. PHYSICAL REVIEW LETTERS 2000; 84:3698-3701. [PMID: 11019180 DOI: 10.1103/physrevlett.84.3698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/1999] [Indexed: 05/23/2023]
Abstract
A high temporal resolution magneto-optical system is employed to observe the time evolution of the vortex structure in Bi(2)Sr(2)CaCu(2)O(8+delta) crystals after a sudden application of a magnetic field. The magneto-optical images reveal dynamic coexistence of two vortex phases: a quasiordered phase in the sample interior and a transient disordered phase near the sample edges. The border between these two phases, marked by an abrupt change in the gradient of the local induction, moves with time. This motion enables tracing the decay of the transient state and the concurrent growth of the thermodynamic vortex phases. The growth rate is sensitive to the location in the field-temperature phase diagram.
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Affiliation(s)
- D Giller
- Institute of Superconductivity, Bar-Ilan University, Ramat-Gan 52900, Israel
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15
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Kazumata Y, Kumakura H, Togano K. Vortex pinning in Bi2Sr2CaCu2O8 tapes irradiated by ions. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:16206-16210. [PMID: 9985698 DOI: 10.1103/physrevb.54.16206] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Menon GI, Dasgupta C, Krishnamurthy HR, Ramakrishnan TV, Sengupta S. Density-functional theory of flux-lattice melting in high-Tc superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:16192-16205. [PMID: 9985697 DOI: 10.1103/physrevb.54.16192] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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17
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Aegerter CM, Lee SL, Keller H, Forgan EM, Lloyd SH. Dimensional crossover in the magnetic phase diagram of Bi2.15Sr1.85CaCu2O8+ delta crystals with different oxygen stoichiometry. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R15661-R15664. [PMID: 9985727 DOI: 10.1103/physrevb.54.r15661] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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18
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Zech D, Lee SL, Keller H, Blatter G, Kes PH, Li TW. Phase diagram of Bi2.15Sr1.85CaCu2O8+ delta in the presence of columnar defects. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:6129-6132. [PMID: 9986625 DOI: 10.1103/physrevb.54.6129] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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19
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Calorimetric measurement of the latent heat of vortex-lattice melting in untwinned YBa2Cu3O7–δ. Nature 1996. [DOI: 10.1038/382791a0] [Citation(s) in RCA: 343] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Nishizaki T, Sasaki T, Fukase T, Kobayashi N. Anomalous magnetization and dimensional crossover of the vortex system in the organic superconductor kappa -(BEDT-TTF)2Cu(NCS)2. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R3760-R3763. [PMID: 9986366 DOI: 10.1103/physrevb.54.r3760] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kadowaki K, Takeya H, Hirata K. Anomalous magnetization behavior of single-crystalline CeRu2. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:462-468. [PMID: 9984281 DOI: 10.1103/physrevb.54.462] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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22
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Theunissen MH, Kes PH. Size Effects in Flow of Flux-Line Solids and Liquids. PHYSICAL REVIEW LETTERS 1996; 77:159-162. [PMID: 10061796 DOI: 10.1103/physrevlett.77.159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Fuchs DT, Zeldov E, Majer D, Doyle RA, Tamegai T, Ooi S, Konczykowski M. Simultaneous resistivity onset and first-order vortex-lattice phase transition in Bi2Sr2CaCu2O8. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R796-R799. [PMID: 9985437 DOI: 10.1103/physrevb.54.r796] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Andersson M, Fivat P, Fàbrega L, Obara H, Decroux M, Triscone J, Fischer O. Vortex solid-to-liquid transition in DyBa2Cu3O7- delta /(Y0.45Pr0.55)Ba2Cu3O7- delta multilayers. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:675-681. [PMID: 9984303 DOI: 10.1103/physrevb.54.675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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25
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Blatter G, Geshkenbein V, Larkin A, Nordborg H. Low-field phase diagram of layered superconductors: The role of electromagnetic coupling. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:72-75. [PMID: 9984227 DOI: 10.1103/physrevb.54.72] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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26
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Ryu S, Stroud D. First-order melting and dynamics of flux lines in a model for YBa2Cu3O7- delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:1320-1333. [PMID: 9985405 DOI: 10.1103/physrevb.54.1320] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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27
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Welp U, Fendrich JA, Kwok WK, Crabtree GW, Veal BW. Thermodynamic evidence for a flux line lattice melting transition in YBa2 Cu3O7- delta. PHYSICAL REVIEW LETTERS 1996; 76:4809-4812. [PMID: 10061386 DOI: 10.1103/physrevlett.76.4809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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28
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Gingras MJ, Huse DA. Topological defects in the random-field XY model and the pinned vortex lattice to vortex glass transition in type-II superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:15193-15200. [PMID: 9983316 DOI: 10.1103/physrevb.53.15193] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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29
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He Y, Muirhead CM, Vinen WF. Paramagnetic Meissner effect in high-temperature superconductors: Experiments and interpretation. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:12441-12453. [PMID: 9982878 DOI: 10.1103/physrevb.53.12441] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Farrell DE, Johnston-Halperin E, Klein L, Fournier P, Kapitulnik A, Forgan EM, Rae AI, Li TW, Trawick ML, Sasik R, Garland JC. Magnetization jumps and irreversibility in Bi2Sr2CaCu2O8. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:11807-11816. [PMID: 9982808 DOI: 10.1103/physrevb.53.11807] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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31
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Khaykovich B, Zeldov E, Majer D, Li TW, Kes PH, Konczykowski M. Vortex-lattice phase transitions in Bi2Sr2CaCu2 O8 crystals with different oxygen stoichiometry. PHYSICAL REVIEW LETTERS 1996; 76:2555-2558. [PMID: 10060729 DOI: 10.1103/physrevlett.76.2555] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Koshelev AE, Glazman LI, Larkin AI. Disorder-induced decoupling of pancake vortices in a layered superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:2786-2791. [PMID: 9983790 DOI: 10.1103/physrevb.53.2786] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Pastoriza H, Kes PH. Direct shear probe of vortex lattice melting in Bi2Sr2CaCu2O8 single crystals. PHYSICAL REVIEW LETTERS 1995; 75:3525-3528. [PMID: 10059608 DOI: 10.1103/physrevlett.75.3525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Bernhard C, Niedermayer C, Binninger U, Hofer A, Wenger C, Tallon JL, Williams GV, Ansaldo EJ, Budnick JI, Stronach CE, Noakes DR, Blankson-Mills MA. Magnetic penetration depth and condensate density of cuprate high-Tc superconductors determined by muon-spin-rotation experiments. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:10488-10498. [PMID: 9980102 DOI: 10.1103/physrevb.52.10488] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Bernhard C, Wenger C, Niedermayer C, Pooke DM, Tallon JL, Kotaka Y, Shimoyama J, Kishio K, Noakes DR, Stronach CE, Sembiring T, Ansaldo EJ. Anisotropy and dimensional crossover of the vortex state in Bi2Sr2CaCu2O8+ delta crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:R7050-R7053. [PMID: 9979747 DOI: 10.1103/physrevb.52.r7050] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Zech D, Lee SL, Keller H, Blatter G, Janossy B, Kes PH, Li TW, Menovsky AA. Correlation of flux lines in single-crystal Bi2Sr2CaCu2O8 with columnar defects. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:6913-6919. [PMID: 9981921 DOI: 10.1103/physrevb.52.6913] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Majer D, Zeldov E, Konczykowski M. Separation of the irreversibility and melting lines in Bi2Sr2CaCu2O8 crystals. PHYSICAL REVIEW LETTERS 1995; 75:1166-1169. [PMID: 10060222 DOI: 10.1103/physrevlett.75.1166] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Ando Y, Komiya S, Kotaka Y, Kishio K. Thermally induced dimensional crossover in single-crystal Bi2Sr2CaCu2Ox. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:3765-3768. [PMID: 9981505 DOI: 10.1103/physrevb.52.3765] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Schneider JW, Schafroth S, Meier PF. Simulated flux-lattice melting and magnetic-field distributions in high-Tc superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:3790-3794. [PMID: 9981510 DOI: 10.1103/physrevb.52.3790] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Lee SL, Warden M, Keller H, Schneider JW, Zech D, Zimmermann P, Cubitt R, Forgan EM, Wylie MT, Kes PH, Li TW, Menovsky AA, Tarnawski Z. Evidence for two-dimensional thermal fluctuations of the vortex structure in Bi2.15Sr1.85CaCu2O8+ delta from muon spin rotation experiments. PHYSICAL REVIEW LETTERS 1995; 75:922-925. [PMID: 10060152 DOI: 10.1103/physrevlett.75.922] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Zimmermann P, Keller H, Lee SL, Savic IM, Warden M, Zech D, Cubitt R, Forgan EM, Kaldis E, Karpinski J, Krüger C. Muon-spin-rotation studies of the temperature dependence of the magnetic penetration depth in the YBa2Cu3Ox family and related compounds. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:541-552. [PMID: 9979633 DOI: 10.1103/physrevb.52.541] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Zuo F, Khizroev S, Alexandrakis GC, Kopylov VN. Anomalous magnetization in single-crystal Tl2Ba2CuO6: Evidence of dimensional crossover. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:R755-R758. [PMID: 9980744 DOI: 10.1103/physrevb.52.r755] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Obara H, Andersson M, Fàbrega L, Fivat P, Triscone J, Decroux M, Fischer O. Observation of a field induced transition in the vortex solid of DyBa2Cu3O7/(Y1-xPrx)Ba2Cu3O7 superlattices. PHYSICAL REVIEW LETTERS 1995; 74:3041-3044. [PMID: 10058088 DOI: 10.1103/physrevlett.74.3041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Farrell DE, Kwok WK, Welp U, Fendrich J, Crabtree GW. Order of the fundamental vortex transformation in YBa2Cu3O7- delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:9148-9154. [PMID: 9977556 DOI: 10.1103/physrevb.51.9148] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Doyle RA, Johnson JD, Hussey NE, Campbell AM, Balakrishnan G, Cohen LF. Josephson coupling, in-plane pinning, and vortex dimensionality in Bi2Sr2CaCu2O8+ delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:9368-9371. [PMID: 9977590 DOI: 10.1103/physrevb.51.9368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Luo S, Yang G, Gough CE. Field and temperature dependence of the c-axis critical current in Bi2Sr2CaCu2O8+ delta single crystals at the melting and two-dimensional decomposition fields. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:6655-6662. [PMID: 9977200 DOI: 10.1103/physrevb.51.6655] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Forgan EM, Cubitt R, Yethiraj M, Christen DK, Paul DM, Lee SL, Gammel PL. Comment on "Vortex dynamics and melting in niobium". PHYSICAL REVIEW LETTERS 1995; 74:1697. [PMID: 10059097 DOI: 10.1103/physrevlett.74.1697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Noetzel R, Bach H, Westerholt K, Freitag B. Bi3.9Sr3.3Ca1.3(Cu0.961Fe0.039)3Ox: A high-Tc structure close to the two-dimensional limit. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3993-3996. [PMID: 9979235 DOI: 10.1103/physrevb.51.3993] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Miu L, Wagner P, Hadish A, Hillmer F, Adrian H, Wiesner J, Wirth G. Bose-glass behavior of the vortex system in epitaxial Bi2Sr2CaCu2O8+ delta films with columnar defects. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3953-3956. [PMID: 9979224 DOI: 10.1103/physrevb.51.3953] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Burlachkov L, Geshkenbein VB, Koshelev AE, Larkin AI, Vinokur VM. Giant flux creep through surface barriers and the irreversibility line in high-temperature superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:16770-16773. [PMID: 9976073 DOI: 10.1103/physrevb.50.16770] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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