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Kokalj J. Electronic diffusion in a normal state of high-Tc cuprate YBa 2Cu 3O 6+x. Proc Natl Acad Sci U S A 2024; 121:e2322670121. [PMID: 38470922 PMCID: PMC10963013 DOI: 10.1073/pnas.2322670121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/15/2024] [Indexed: 03/14/2024] Open
Abstract
The bad metallic phase with resistivity above the Mott-Ioffe-Regel (MIR) limit, which appears also in cuprate superconductors, was recently understood by cold atom and computer simulations of the Hubbard model via charge susceptibility and charge diffusion constant. However, since reliable simulations can be typically done only at temperatures above the experimental temperatures, the question for cuprate superconductors is still open. This paper addresses this question by resorting to heat transport, which allows for the estimate of electronic diffusion and it further combines it with the resistivity to estimate the charge susceptibility. The doping and temperature dependencies of diffusion constant and charge susceptibilities are shown and discussed for two samples of YBa2Cu3O6+x. Results indicate strongly incoherent transport, mean free path corresponding to the MIR limit for the underdoped sample at temperatures above ~200 K and significant effect of the charge susceptibility on the resistivity.
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Affiliation(s)
- Jure Kokalj
- Department of Theoretical Physics, Jožef Stefan Institute, Ljubljana1000, Slovenia
- Faculty of Civil and Geodetic Engineering, Department of Mathematics and Physics, University of Ljubljana, Ljubljana1000, Slovenia
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2
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Abstract
A translation-invariant (TI) bipolaron theory of superconductivity based, like Bardeen–Cooper–Schrieffer theory, on Fröhlich Hamiltonian is presented. Here the role of Cooper pairs belongs to TI bipolarons which are pairs of spatially delocalized electrons whose correlation length of a coupled state is small. The presence of Fermi surface leads to the stabilization of such states in its vicinity and a possibility of their Bose–Einstein condensation (BEC). The theory provides a natural explanation of the existence of a pseudogap phase preceding the superconductivity and enables one to estimate the temperature of a transition T * from a normal state to a pseudogap one. It is shown that the temperature of BEC of TI bipolarons determines the temperature of a superconducting transition T c which depends not on the bipolaron effective mass but on the ordinary mass of a band electron. This removes restrictions on the upper limit of T c for a strong electron-phonon interaction. A natural explanation is provided for the angular dependence of the superconducting gap which is determined by the angular dependence of the phonon spectrum. It is demonstrated that a lot of experiments on thermodynamic and transport characteristics, Josephson tunneling and angle-resolved photoemission spectroscopy (ARPES) of high-temperature superconductors does not contradict the concept of a TI bipolaron mechanism of superconductivity in these materials. Possible ways of enhancing T c and producing new room-temperature superconductors are discussed on the basis of the theory suggested.
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3
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Superconducting Properties of 3D Low-Density TI-Bipolaron Gas in Magnetic Field. CONDENSED MATTER 2019. [DOI: 10.3390/condmat4020043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Consideration is given to thermodynamical properties of a three-dimensional Bose-condensate of translation-invariant bipolarons (TI-bipolarons) in magnetic field. The critical temperature of transition, critical magnetic fields, energy, heat capacity and the transition heat of TI-bipolaron gas are calculated. Such values as maximum magnetic field, London penetration depth and their temperature dependencies are calculated. The results obtained are used to explain experiments on high-temperature superconductors.
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4
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She JH, Balatsky AV. Berezinskii-Kosterlitz-Thouless transition to the superconducting state of heavy-fermion superlattices. PHYSICAL REVIEW LETTERS 2012; 109:077002. [PMID: 23006395 DOI: 10.1103/physrevlett.109.077002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Indexed: 06/01/2023]
Abstract
We propose an explanation of the superconducting transitions discovered in the heavy-fermion superlattices by Mizukami et al. [Nature Phys. 7, 849 (2011)] in terms of Berezinskii-Kosterlitz-Thouless (BKT) transition. We observe that the effective mass mismatch between the heavy-fermion superconductor and the normal metal regions provides an effective barrier that enables quasi-2D superconductivity in such systems. We show that the resistivity data, both with and without magnetic field, are consistent with BKT transition. Furthermore, we study the influence of a nearby magnetic quantum critical point on the vortex system and find that the vortex core energy can be significantly reduced due to magnetic fluctuations. Further reduction of the gap with decreasing number of layers is understood as a result of pair breaking effect of Yb ions at the interface.
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Affiliation(s)
- Jian-Huang She
- Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, USA
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5
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Flux exclusion superconducting quantum metamaterial: towards quantum-level switching. Sci Rep 2012; 2:450. [PMID: 22690319 PMCID: PMC3371586 DOI: 10.1038/srep00450] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Accepted: 05/21/2012] [Indexed: 11/08/2022] Open
Abstract
Nonlinear and switchable metamaterials achieved by artificial structuring on the subwavelength scale have become a central topic in photonics research. Switching with only a few quanta of excitation per metamolecule, metamaterial's elementary building block, is the ultimate goal, achieving which will open new opportunities for energy efficient signal handling and quantum information processing. Recently, arrays of Josephson junction devices have been proposed as a possible solution. However, they require extremely high levels of nanofabrication. Here we introduce a new quantum superconducting metamaterial which exploits the magnetic flux quantization for switching. It does not contain Josephson junctions, making it simple to fabricate and scale into large arrays. The metamaterial was manufactured from a high-temperature superconductor and characterized in the low intensity regime, providing the first observation of the quantum phenomenon of flux exclusion affecting the far-field electromagnetic properties of the metamaterial.
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6
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Harshman DR, Fiory AT. Concerning the superconducting gap symmetry in YBa₂Cu₃O₇- δ, YBa₂Cu₄O, and La₂ - xSrxCuO₄ determined from muon spin rotation in mixed states of crystals and powders. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:315702. [PMID: 21778567 DOI: 10.1088/0953-8984/23/31/315702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Muon spin rotation (μ(+)SR) measurements of square-root second moments of local magnetic fields σ in superconducting mixed states, as published for oriented crystals and powder samples of YBa(2)Cu(3)O(7 - δ) (δ≈0.05), YBa(2)Cu(4)O(8) and La(2 - x)Sr(x)CuO(4) (x ∼ 0.15-0.17), are subjected to comparative analysis for superconducting gap symmetry. For oriented crystals it is shown that anomalous dependences of σ on temperature T and applied field H, as-measured and extracted a- and b-axial components, are attributable to fluxon depinning and disorder that obscure the intrinsic character of the superconducting penetration depth. Random averages derived from oriented crystal data differ markedly from corresponding non-oriented powders, owing to the weaker influence of pinning in high-quality crystals. Related indicators for pinning perturbations, such as non-monotonic H dependence of σ, irreproducible data and strong H dependence of apparent transition temperatures, are also evident. Strong intrinsic pinning suppresses thermal anomalies in c-axis components of σ, which reflect nodeless gap symmetries in YBa(2)Cu(3)O(7 - δ) and YBa(2)Cu(4)O(8). For YBa(2)Cu(3)O(7 - δ), the crystal (a-b components, corrected for depinning) and powder data all reflect a nodeless gap (however, a-b symmetries remain unresolved for crystalline YBa(2)Cu(4)O(8) and La(1.83)Sr(0.17)CuO(4)). Inconsistencies contained in multiple and noded gap interpretations of crystal data, and observed differences between bulk μ(+)SR and surface-sensitive measurements are discussed.
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7
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Hashimoto K, Shibauchi T, Kato T, Ikada K, Okazaki R, Shishido H, Ishikado M, Kito H, Iyo A, Eisaki H, Shamoto S, Matsuda Y. Microwave penetration depth and quasiparticle conductivity of PrFeAsO1-y single crystals: evidence for a full-gap superconductor. PHYSICAL REVIEW LETTERS 2009; 102:017002. [PMID: 19257228 DOI: 10.1103/physrevlett.102.017002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Indexed: 05/27/2023]
Abstract
In-plane microwave penetration depth lambda_{ab} and quasiparticle conductivity at 28 GHz are measured in underdoped single crystals of the Fe-based superconductor PrFeAsO_{1-y} (T_{c} approximately 35 K) by using a sensitive superconducting cavity resonator. lambda_{ab}(T) shows flat dependence at low temperatures, which is incompatible with the presence of nodes in the superconducting gap Delta(k). The temperature dependence of the superfluid density demonstrates that the gap is nonzero (Delta/k_{B}T_{c} greater, similar1.6) all over the Fermi surface. The microwave conductivity below T_{c} exhibits an enhancement larger than the coherence peak, reminiscent of high-T_{c} cuprate superconductors.
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Affiliation(s)
- K Hashimoto
- Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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8
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Cheng C, Xu C, Zhou T, Zhang XF, Xu Y. Temperature dependent complex photonic band structures in two-dimensional photonic crystals composed of high-temperature superconductors. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2008; 20:275203. [PMID: 21694365 DOI: 10.1088/0953-8984/20/27/275203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Complex photonic band structures in two-dimensional photonic crystals composed of high-temperature superconductors (HTSCs) for the case of E-polarization are calculated as a function of temperature below T(c), where T(c) is the critical temperature of the HTSC. The calculations are based on a temperature dependent complex dielectric function, which includes contributions of both superconducting electrons (SCEs) and normal conducting electrons (NCEs), and a frequency dependent plane wave expansion method. Both temperature independent and temperature dependent damping term in the dielectric function are considered to calculate dispersion relations and the lifetime of the eigenmodes. The results are compared with those obtained by existing calculation methods, which neglect the contribution of NCEs. Our results correspond quite well with those obtained by the existing method in the low-temperature range 0<T/T(c)≤0.3; however, results obtained with the two methods are quite different in the temperature range 0.3<T/T(c)≤1. We demonstrate that the contribution of NCEs is non-negligible with increasing temperature.
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Affiliation(s)
- Chuan Cheng
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology, Lanzhou University, Lanzhou Gansu 73000, People's Republic of China
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9
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Shimono Y, Shibauchi T, Kasahara Y, Kato T, Hashimoto K, Matsuda Y, Yamaura J, Nagao Y, Hiroi Z. effects of rattling phonons on the dynamics of quasiparticle excitation in the beta-pyrochlore KOs(2)O(6) Superconductor. PHYSICAL REVIEW LETTERS 2007; 98:257004. [PMID: 17678049 DOI: 10.1103/physrevlett.98.257004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2007] [Indexed: 05/16/2023]
Abstract
Microwave penetration depth lambda and surface resistance at 27 GHz are measured in high quality crystals of KOs(2)O(6). Firm evidence for fully gapped superconductivity is provided from lambda(T). Below the second transition at T(p) approximately 8 K, the superfluid density shows a steplike change with a suppression of effective critical temperature T(c). Concurrently, the extracted quasiparticle scattering time shows a steep enhancement, indicating a strong coupling between the anomalous rattling motion of K ions and quasiparticles. The results imply that the rattling phonons help to enhance superconductivity, and that K sites freeze to an ordered state with long quasiparticle mean free path below T(p).
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Affiliation(s)
- Y Shimono
- Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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10
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Krishana K, Ong NP, Li Q, Gu GD, Koshizuka N. Plateaus Observed in the Field Profile of Thermal Conductivity in the Superconductor Bi
2
Sr
2
CaCu
2
O
8. Science 1997. [DOI: 10.1126/science.277.5322.83] [Citation(s) in RCA: 250] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- K. Krishana
- K. Krishana and N. P. Ong, Joseph Henry Laboratories of Physics, Princeton University, Princeton, NJ 08544, USA
- Q. Li, Materials Science Division, Brookhaven National Laboratory, Post Office Box 5000, Upton, NY 11973, USA
- G. D. Gu, School of Physics, University of New South Wales, Sydney 2052, Australia
- N. Koshizuka, Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chrome, Koto-ku, Tokyo 135, Japan
| | - N. P. Ong
- K. Krishana and N. P. Ong, Joseph Henry Laboratories of Physics, Princeton University, Princeton, NJ 08544, USA
- Q. Li, Materials Science Division, Brookhaven National Laboratory, Post Office Box 5000, Upton, NY 11973, USA
- G. D. Gu, School of Physics, University of New South Wales, Sydney 2052, Australia
- N. Koshizuka, Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chrome, Koto-ku, Tokyo 135, Japan
| | - Q. Li
- K. Krishana and N. P. Ong, Joseph Henry Laboratories of Physics, Princeton University, Princeton, NJ 08544, USA
- Q. Li, Materials Science Division, Brookhaven National Laboratory, Post Office Box 5000, Upton, NY 11973, USA
- G. D. Gu, School of Physics, University of New South Wales, Sydney 2052, Australia
- N. Koshizuka, Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chrome, Koto-ku, Tokyo 135, Japan
| | - G. D. Gu
- K. Krishana and N. P. Ong, Joseph Henry Laboratories of Physics, Princeton University, Princeton, NJ 08544, USA
- Q. Li, Materials Science Division, Brookhaven National Laboratory, Post Office Box 5000, Upton, NY 11973, USA
- G. D. Gu, School of Physics, University of New South Wales, Sydney 2052, Australia
- N. Koshizuka, Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chrome, Koto-ku, Tokyo 135, Japan
| | - N. Koshizuka
- K. Krishana and N. P. Ong, Joseph Henry Laboratories of Physics, Princeton University, Princeton, NJ 08544, USA
- Q. Li, Materials Science Division, Brookhaven National Laboratory, Post Office Box 5000, Upton, NY 11973, USA
- G. D. Gu, School of Physics, University of New South Wales, Sydney 2052, Australia
- N. Koshizuka, Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chrome, Koto-ku, Tokyo 135, Japan
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11
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Leyronas X, Combescot R. London penetration depth of strongly coupled isotropic superconductors: Low-temperature behavior. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:3482-3488. [PMID: 9986249 DOI: 10.1103/physrevb.54.3482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Frenkel A, Gao F, Liu Y, Whitaker JF, Uher C, Hou SY, Phillips JM. Conductivity peak, relaxation dynamics, and superconducting gap of YBa2Cu3O7 studied by terahertz and femtosecond optical spectroscopies. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:1355-1365. [PMID: 9985408 DOI: 10.1103/physrevb.54.1355] [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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13
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Gao F, Carr GL, Porter CD, Tanner DB, Williams GP, Hirschmugl CJ, Dutta B, Wu XD, Etemad S. Quasiparticle damping and the coherence peak in YBa2Cu3O7- delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:700-710. [PMID: 9984307 DOI: 10.1103/physrevb.54.700] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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14
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Wu CJ, Tseng TY. Microwave response of superconducting platelet crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:488-496. [PMID: 9984285 DOI: 10.1103/physrevb.54.488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Graf MJ, Yip SK, Sauls JA, Rainer D. Electronic thermal conductivity and the Wiedemann-Franz law for unconventional superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:15147-15161. [PMID: 9983313 DOI: 10.1103/physrevb.53.15147] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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16
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François I, Jaekel C, Kyas G, Dierickx D, Heeres RM, Moshchalkov VV, Bruynseraede Y, Roskos HG, Borghs G, Kurz H. Influence of Pr doping and oxygen deficiency on the scattering behavior of YBa2Cu3O7 thin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:12502-12508. [PMID: 9982884 DOI: 10.1103/physrevb.53.12502] [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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17
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Quinlan SM, Hirschfeld PJ, Scalapino DJ. Infrared conductivity of a dx2-y2-wave superconductor with impurity and spin-fluctuation scattering. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:8575-8582. [PMID: 9982366 DOI: 10.1103/physrevb.53.8575] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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18
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Bulut N, Scalapino DJ. Neutron scattering from a collective spin fluctuation mode in a CuO2 bilayer. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:5149-5152. [PMID: 9984113 DOI: 10.1103/physrevb.53.5149] [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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19
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Anlage SM, Mao J, Booth JC, Wu DH, Peng JL. Fluctuations in the microwave conductivity of YBa2Cu3O7- delta single crystals in zero dc magnetic field. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:2792-2796. [PMID: 9983791 DOI: 10.1103/physrevb.53.2792] [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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20
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Cohn JL. Superconducting-state enhancement of thermal conductivity in the cuprates: Correlation with the pair density. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:R2963-R2966. [PMID: 9983896 DOI: 10.1103/physrevb.53.r2963] [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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21
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Zhang W. Self-consistent study of the Josephson effect for the d-wave superconductor-insulator-superconductor junction. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:12538-12540. [PMID: 9980408 DOI: 10.1103/physrevb.52.12538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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22
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Liu SH, Klemm RA. Surface state effects in high-Tc superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:9657-9673. [PMID: 9980016 DOI: 10.1103/physrevb.52.9657] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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23
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Titov ML, Yashenkin AG, Aristov DN. Quasiparticle damping in two-dimensional superconductors with unconventional pairing. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:10626-10632. [PMID: 9980116 DOI: 10.1103/physrevb.52.10626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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24
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Gao F, Whitaker JF, Liu Y, Uher C, Platt CE, Klein MV. Terahertz transmission of a Ba1-xKxBiO3 film probed by coherent time-domain spectroscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:3607-3613. [PMID: 9981486 DOI: 10.1103/physrevb.52.3607] [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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25
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O'Donovan C, Carbotte JP. In-plane penetration-depth anisotropy in a d-wave model. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:4568-4576. [PMID: 9981592 DOI: 10.1103/physrevb.52.4568] [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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26
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Zhang W. Identifying the superconducting pairing state of high-Tc oxides by the Josephson effect. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:3772-3775. [PMID: 9981507 DOI: 10.1103/physrevb.52.3772] [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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27
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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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28
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Matsumoto T, Choopun S, Kawai T. Temperature-dependent tunneling spectra of Bi2Sr2CaCu2O8 single crystals with well-defined Bi2Sr2CuO6 epitaxial layers. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:591-602. [PMID: 9979639 DOI: 10.1103/physrevb.52.591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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29
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Atkinson WA, Carbotte JP. Penetration-depth calculations in the ab and c directions in a layered S/N superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:16371-16379. [PMID: 9978620 DOI: 10.1103/physrevb.51.16371] [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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30
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Carbotte JP, Jiang C, Basov DN, Timusk T. Evidence for d-wave superconductivity in YBa2Cu3O7- delta from far-infrared conductivity. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:11798-11805. [PMID: 9977921 DOI: 10.1103/physrevb.51.11798] [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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Abrikosov AA. Possibility of reconciliation on the type of the order parameter in high-temperature superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:11955-11957. [PMID: 9977942 DOI: 10.1103/physrevb.51.11955] [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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32
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Harris JM, Ong NP, Matl P, Gagnon R, Taillefer L, Kimura T, Kitazawa K. Additive quasiparticle and vortex Hall conductivities in La2-xSrxCuO4 and untwinned YBa2Cu3O6.93. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:12053-12056. [PMID: 9977971 DOI: 10.1103/physrevb.51.12053] [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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33
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Biagini M. Superconducting transition in two bidimensional t-J lattices with interplane single-electron hopping. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:6107-6110. [PMID: 9979532 DOI: 10.1103/physrevb.51.6107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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34
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Blackstead HA, Pulling DB, Paranthaman M, Brynestad J. Field- and temperature-dependent surface resistance of superconducting polycrystalline multiple-phase Hg-Ba-Ca-Cu-O: Evidence for dirty-limit behavior. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3783-3790. [PMID: 9979196 DOI: 10.1103/physrevb.51.3783] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Rieck CT, Little WA, Ruvalds J, Virosztek A. Infrared and microwave spectra of an energy gap in high-temperature superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3772-3782. [PMID: 9979195 DOI: 10.1103/physrevb.51.3772] [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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Frequency and temperature dependence of the millimeter wave conductivity of epitaxial YBa2Cu3O7 films. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf00732254] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yokoya T, Takahashi T, Mochiku T, Kadowaki K. Anisotropy of the electronic structure and superconducting gap in Bi2Sr2CaCu2O8. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3945-3948. [PMID: 9979222 DOI: 10.1103/physrevb.51.3945] [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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Mao J, Wu DH, Peng JL, Greene RL, Anlage SM. Anisotropic surface impedance of YBa2Cu3O7- delta single crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3316-3319. [PMID: 9979138 DOI: 10.1103/physrevb.51.3316] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kitano H, Shibauchi T, Uchinokura K, Maeda A, Asaoka H, Takei H. c-axis microwave conductivity of YBa2Cu3O7- delta in the superconducting state. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:1401-1404. [PMID: 9978316 DOI: 10.1103/physrevb.51.1401] [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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Yang J, Hu CR. Robustness of the midgap states predicted to exist on a {110} surface of a dx2a-x2b-wave superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:16766-16769. [PMID: 9976072 DOI: 10.1103/physrevb.50.16766] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Hirschfeld PJ, Putikka WO, Scalapino DJ. d-wave model for microwave response of high-Tc superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:10250-10264. [PMID: 9975108 DOI: 10.1103/physrevb.50.10250] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Buhleier R, Brorson SD, Trofimov IE, White JO, Habermeier H, Kuhl J. Anomalous behavior of the complex conductivity of Y1-xPrxBa2Cu3O7 observed with THz spectroscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:9672-9675. [PMID: 9975040 DOI: 10.1103/physrevb.50.9672] [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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Lee JY, Paget KM, Lemberger TR, Foltyn SR, Wu X. Crossover in temperature dependence of penetration depth lambda (T) in superconducting YBa2Cu3O7- delta films. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:3337-3341. [PMID: 9976586 DOI: 10.1103/physrevb.50.3337] [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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Bonn DA, Kamal S, Zhang K, Liang R, Baar DJ, Klein E, Hardy WN. Comparison of the influence of Ni and Zn impurities on the electromagnetic properties of YBa2Cu3O6.95. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:4051-4063. [PMID: 9976685 DOI: 10.1103/physrevb.50.4051] [Citation(s) in RCA: 297] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Golosovsky M, Tsindlekht M, Chayet H, Davidov D. Vortex depinning frequency in YBa2Cu3O7-x superconducting thin films: Anisotropy and temperature dependence. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:470-477. [PMID: 9974564 DOI: 10.1103/physrevb.50.470] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gough CE, Exon NJ. Microwave response of anisotropic high-temperature-superconductor crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:488-495. [PMID: 9974566 DOI: 10.1103/physrevb.50.488] [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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Anlage SM, Wu DH, Mao J, Mao SN, Xi XX, Venkatesan T, Peng JL, Greene RL. Electrodynamics of Nd1.85Ce0.15CuO4: Comparison with Nb and YBa2Cu3O7- delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:523-535. [PMID: 9974571 DOI: 10.1103/physrevb.50.523] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Basov DN, Puchkov AV, Hughes RA, Strach T, Preston J, Timusk T, Bonn DA, Liang R, Hardy WN. Disorder and superconducting-state conductivity of single crystals of YBa2Cu3O6.95. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:12165-12169. [PMID: 10010090 DOI: 10.1103/physrevb.49.12165] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Iguchi I, Wen Z. Experimental evidence for a d-wave pairing state in YBa2Cu3O7-y from a study of YBa2Cu3O7-y/insulator/Pb Josephson tunnel junctions. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:12388-12391. [PMID: 10010139 DOI: 10.1103/physrevb.49.12388] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Buan J, Stojkovic BP, Israeloff NE, Goldman AM, Huang CC, Valls OT, Liu JZ, Shelton R. Transverse magnetization study of the pairing state of the high-Tc superconductor LuBa2Cu3O7- delta. PHYSICAL REVIEW LETTERS 1994; 72:2632-2635. [PMID: 10055933 DOI: 10.1103/physrevlett.72.2632] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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