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Mazur GP, van Loo N, Wang JY, Dvir T, Wang G, Khindanov A, Korneychuk S, Borsoi F, Dekker RC, Badawy G, Vinke P, Gazibegovic S, Bakkers EPAM, Pérez MQ, Heedt S, Kouwenhoven LP. Spin-Mixing Enhanced Proximity Effect in Aluminum-Based Superconductor-Semiconductor Hybrids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2202034. [PMID: 35680622 DOI: 10.1002/adma.202202034] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/25/2022] [Indexed: 06/15/2023]
Abstract
In superconducting quantum circuits, aluminum is one of the most widely used materials. It is currently also the superconductor of choice for the development of topological qubits. However, aluminum-based devices suffer from poor magnetic field compatibility. Herein, this limitation is resolved by showing that adatoms of heavy elements (e.g., platinum) increase the critical field of thin aluminum films by more than a factor of two. Using tunnel junctions, it is shown that the increased field resilience originates from spin-orbit scattering introduced by Pt. This property is exploited in the context of the superconducting proximity effect in semiconductor-superconductor hybrids, where it is shown that InSb nanowires strongly coupled to Al/Pt films can maintain superconductivity up to 7 T. The two-electron charging effect is shown to be robust against the presence of heavy adatoms. Additionally, non-local spectroscopy is used in a three-terminal geometry to probe the bulk of hybrid devices, showing that it remains free of sub-gap states. Finally, it is demonstrated that proximitized semiconductor states maintain their ability to Zeeman-split in an applied magnetic field. Combined with the chemical stability and well-known fabrication routes of aluminum, Al/Pt emerges as the natural successor to Al-based systems and is a compelling alternative to other superconductors, whenever high-field resilience is required.
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Affiliation(s)
- Grzegorz P Mazur
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Nick van Loo
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Ji-Yin Wang
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Tom Dvir
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Guanzhong Wang
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Aleksei Khindanov
- Department of Physics, University of California, Santa Barbara, CA, 93106, USA
| | - Svetlana Korneychuk
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Francesco Borsoi
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Robin C Dekker
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Ghada Badawy
- Department of Applied Physics, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Peter Vinke
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Sasa Gazibegovic
- Department of Applied Physics, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Erik P A M Bakkers
- Department of Applied Physics, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Marina Quintero- Pérez
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
- Netherlands Organisation for Applied Scientific Research (TNO), Delft, 2600 AD, The Netherlands
| | - Sebastian Heedt
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
| | - Leo P Kouwenhoven
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, The Netherlands
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Machon P, Wolf MJ, Beckmann D, Belzig W. Experimental and theoretical study of field-dependent spin splitting at ferromagnetic insulator-superconductor interfaces. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:682-688. [PMID: 35957675 PMCID: PMC9344541 DOI: 10.3762/bjnano.13.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
We present a combined experimental and theoretical work that investigates the magnetic proximity effect at a ferromagnetic insulator-superconductor (FI-S) interface. The calculations are based on the boundary condition for diffusive quasiclassical Green's functions, which accounts for arbitrarily strong spin-dependent effects and spin mixing angles. The resulting phase diagram shows a transition from a first-order to a second-order phase transition for large spin mixing angles. The experimentally found differential conductance of an EuS-Al heterostructure is compared with the theoretical calculation. With the assumption of a uniform spin mixing angle that depends on the externally applied field, we find good agreement between theory and experiment. The theory depends only on very few parameters, mostly specified by the experimental setup. We determine the effective spin of the interface moments as J ≈ 0.74ℏ.
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Affiliation(s)
- Peter Machon
- Department of Physics, University of Konstanz, D-78457 Konstanz, Germany
| | - Michael J Wolf
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany
- present address: Institute for Technical Physics, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany
| | - Detlef Beckmann
- Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany
| | - Wolfgang Belzig
- Department of Physics, University of Konstanz, D-78457 Konstanz, Germany
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3
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Wei P, Manna S, Eich M, Lee P, Moodera J. Superconductivity in the Surface State of Noble Metal Gold and its Fermi Level Tuning by EuS Dielectric. PHYSICAL REVIEW LETTERS 2019; 122:247002. [PMID: 31322391 DOI: 10.1103/physrevlett.122.247002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/27/2019] [Indexed: 06/10/2023]
Abstract
The induced superconductivity (SC) in a robust and scalable quantum material with strong Rashba spin-orbit coupling is particularly attractive for generating topological superconductivity and Majorana bound states (MBS). Gold (111) thin film has been proposed as a promising candidate because of the large Rashba energy, the predicted topological nature, and the possibility for large-scale MBS device fabrications. We experimentally demonstrate two important steps towards achieving such a goal. We successfully show induced SC in the Shockley surface state (SS) of ultrathin Au(111) layers grown over epitaxial vanadium films, which is easily achievable on a wafer scale. The emergence of SC in the SS, which is physically separated from a bulk superconductor, is attained by indirect quasiparticle scattering processes instead of by conventional interfacial Andreev reflections. We further show the ability to tune the SS Fermi level (E_{F}) by interfacing SS with a high-κ dielectric ferromagnetic insulator EuS. The shift of E_{F} from ∼550 to ∼34 mV in superconducting SS is an important step towards realizing MBS in this robust system.
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Affiliation(s)
- Peng Wei
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
| | - Sujit Manna
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Marius Eich
- Plasma Science and Fusion Center & Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Solid State Physics Laboratory, ETH Zurich, 8093 Zurich, Switzerland
| | - Patrick Lee
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Jagadeesh Moodera
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Plasma Science and Fusion Center & Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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4
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Vargunin A, Silaev M. Flux flow spin Hall effect in type-II superconductors with spin-splitting field. Sci Rep 2019; 9:5914. [PMID: 30976007 PMCID: PMC6459863 DOI: 10.1038/s41598-019-42034-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 03/19/2019] [Indexed: 11/09/2022] Open
Abstract
We predict the very large spin Hall effect in type-II superconductors whose mechanism is drastically different from the previously known ones. We find that in the flux-flow regime the spin is transported by the spin-polarized Abrikosov vortices moving under the action of the Lorenz force in the direction perpendicular to the applied electric current. Due to the large vortex velocities the spin Hall angle can be of the order of unity in realistic systems based on the high-field superconductors, superconductor/ferromagnet hybrid structures or the recently developed superconductor/ferromagnetic insulator proximity structures. We propose the realization of high-frequency pure spin current generator based on the periodic structure of moving vortex lattices. We find the patterns of charge imbalance and spin accumulation generated by moving vortices, which can be used for the electrical detection of individual vortex motion. The new mechanism of inverse flux-flow spin Hall effect is found based on the driving force acting on the vortices in the presence of injected spin current which results in the generation of transverse voltage.
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Affiliation(s)
- Artjom Vargunin
- Department of Physics and Nanoscience Center, University of Jyväskylä, Jyväskylä, P.O. Box 35 (YFL), FI-40014, Finland
- Institute of Physics, University of Tartu, Tartu, EE-50411, Estonia
| | - Mikhail Silaev
- Department of Physics and Nanoscience Center, University of Jyväskylä, Jyväskylä, P.O. Box 35 (YFL), FI-40014, Finland.
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5
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Swartz AG, Cheung AKC, Yoon H, Chen Z, Hikita Y, Raghu S, Hwang HY. Superconducting Tunneling Spectroscopy of Spin-Orbit Coupling and Orbital Depairing in Nb:SrTiO_{3}. PHYSICAL REVIEW LETTERS 2018; 121:167003. [PMID: 30387624 DOI: 10.1103/physrevlett.121.167003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Indexed: 06/08/2023]
Abstract
We have examined the intrinsic spin-orbit coupling and orbital depairing in thin films of Nb-doped SrTiO_{3} by superconducting tunneling spectroscopy. The orbital depairing is geometrically suppressed in the two-dimensional limit, enabling a quantitative evaluation of the Fermi level spin-orbit scattering using Maki's theory. The response of the superconducting gap under in-plane magnetic fields demonstrates short spin-orbit scattering times τ_{so}≤1.1 ps. Analysis of the orbital depairing indicates that the heavy electron band contributes significantly to pairing. These results suggest that the intrinsic spin-orbit scattering time in SrTiO_{3} is comparable to those associated with Rashba effects in SrTiO_{3} interfacial conducting layers and can be considered significant in all forms of superconductivity in SrTiO_{3}.
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Affiliation(s)
- Adrian G Swartz
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Alfred K C Cheung
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - Hyeok Yoon
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Zhuoyu Chen
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Yasuyuki Hikita
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Srinivas Raghu
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - Harold Y Hwang
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
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6
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Beckmann D, Hübler F, Wolf MJ, Löhneysen HV. Andreev bound states at spin-active interfaces. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2018; 376:20150002. [PMID: 29941622 PMCID: PMC6030144 DOI: 10.1098/rsta.2015.0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/07/2018] [Indexed: 06/08/2023]
Abstract
Andreev bound states are ubiquitous in superconducting hybrid structures. They are formed near impurities, in Josephson junctions, in vortex cores and at interfaces. At spin-active superconductor-ferromagnet interfaces, Andreev bound states are formed due to spin-dependent scattering phases. Spin-dependent phase shifts are an important ingredient for the generation of triplet Cooper pairs in superconductor-ferromagnet hybrid structures. Spectroscopy of Andreev bound states is a powerful probe of superconducting order parameter symmetry, as well as spin-dependent interface scattering and the triplet proximity effect.This article is part of the theme issue 'Andreev bound states'.
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Affiliation(s)
- D Beckmann
- Institut für Nanotechnologie, Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
- Center for Functional Nanostructures (CFN), Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
| | - F Hübler
- Institut für Nanotechnologie, Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
- Center for Functional Nanostructures (CFN), Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
- Institut für Festkörperphysik, Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
| | - M J Wolf
- Institut für Nanotechnologie, Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
| | - H V Löhneysen
- Physikalisches Institut, Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
- Center for Functional Nanostructures (CFN), Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
- Institut für Festkörperphysik, Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
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7
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Kolenda S, Wolf MJ, Beckmann D. Observation of Thermoelectric Currents in High-Field Superconductor-Ferromagnet Tunnel Junctions. PHYSICAL REVIEW LETTERS 2016; 116:097001. [PMID: 26991193 DOI: 10.1103/physrevlett.116.097001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Indexed: 06/05/2023]
Abstract
We report on the experimental observation of spin-dependent thermoelectric currents in superconductor-ferromagnet tunnel junctions in high magnetic fields. The thermoelectric signals are due to a spin-dependent lifting of the particle-hole symmetry, and are found to be in excellent agreement with recent theoretical predictions. The maximum Seebeck coefficient inferred from the data is about -100 μV/K, much larger than commonly found in metallic structures. Our results directly prove the coupling of spin and heat transport in high-field superconductors.
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Affiliation(s)
- S Kolenda
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - M J Wolf
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - D Beckmann
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany
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8
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Eschrig M. Spin-polarized supercurrents for spintronics: a review of current progress. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2015; 78:104501. [PMID: 26397456 DOI: 10.1088/0034-4885/78/10/104501] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
During the past 15 years a new field has emerged, which combines superconductivity and spintronics, with the goal to pave a way for new types of devices for applications combining the virtues of both by offering the possibility of long-range spin-polarized supercurrents. Such supercurrents constitute a fruitful basis for the study of fundamental physics as they combine macroscopic quantum coherence with microscopic exchange interactions, spin selectivity, and spin transport. This report follows recent developments in the controlled creation of long-range equal-spin triplet supercurrents in ferromagnets and its contribution to spintronics. The mutual proximity-induced modification of order in superconductor-ferromagnet hybrid structures introduces in a natural way such evasive phenomena as triplet superconductivity, odd-frequency pairing, Fulde-Ferrell-Larkin-Ovchinnikov pairing, long-range equal-spin supercurrents, [Formula: see text]-Josephson junctions, as well as long-range magnetic proximity effects. All these effects were rather exotic before 2000, when improvements in nanofabrication and materials control allowed for a new quality of hybrid structures. Guided by pioneering theoretical studies, experimental progress evolved rapidly, and since 2010 triplet supercurrents are routinely produced and observed. We have entered a new stage of studying new phases of matter previously out of our reach, and of merging the hitherto disparate fields of superconductivity and spintronics to a new research direction: super-spintronics.
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Affiliation(s)
- Matthias Eschrig
- Department of Physics, Royal Holloway, University of London, Egham Hill, Egham, Surrey TW20 0EX, UK
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10
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Löfwander T, Champel T, Durst J, Eschrig M. Interplay of magnetic and superconducting proximity effects in ferromagnet-superconductor-ferromagnet trilayers. PHYSICAL REVIEW LETTERS 2005; 95:187003. [PMID: 16383937 DOI: 10.1103/physrevlett.95.187003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2005] [Indexed: 05/05/2023]
Abstract
We present theoretical results on the interplay of magnetic and superconducting orders in diffusive ferromagnet-superconductor-ferromagnet trilayers. The induced triplet superconducting correlations throughout the trilayer lead to an induced spin magnetization. We include self-consistency of the order parameter in the superconducting layer at arbitrary temperatures, arbitrary interface transparency, and any relative orientation of the exchange fields in the two ferromagnets. We propose to use the torque on the trilayer in an external magnetic field as a probe of the presence of triplet correlations in the superconducting phase.
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Affiliation(s)
- Tomas Löfwander
- Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
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11
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Choi CH. Effect of the non-s-wave phase shifts of the impurity potential in a d-wave superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:16199-16203. [PMID: 9981004 DOI: 10.1103/physrevb.52.16199] [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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12
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Kim H, Nicol EJ. Effect of impurity scattering on a (d+s)-wave superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:13576-13584. [PMID: 9980556 DOI: 10.1103/physrevb.52.13576] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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13
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Barash YS, Galaktionov AV, Zaikin AD. Charge transport in junctions between d-wave superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:665-682. [PMID: 9979645 DOI: 10.1103/physrevb.52.665] [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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14
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Choi CH. Local perturbation of an order parameter induced by an impurity in anisotropic superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:417-419. [PMID: 9977102 DOI: 10.1103/physrevb.51.417] [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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Choi CH. Density of states near an impurity in an unconventional superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:3491-3494. [PMID: 9976620 DOI: 10.1103/physrevb.50.3491] [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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16
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Preosti G, Kim H, Muzikar P. Density of states in unconventional superconductors: Impurity-scattering effects. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:1259-1263. [PMID: 9975798 DOI: 10.1103/physrevb.50.1259] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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17
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Choi CH, Sauls JA. Anisotropy of the upper critical field in a heavy-fermion superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:13684-13690. [PMID: 10007770 DOI: 10.1103/physrevb.48.13684] [Citation(s) in RCA: 17] [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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Tkaczyk JE, Tedrow PM. Influence of spin-orbit scattering on the Ruderman-Kittel-Kasuya-Yosida effect in superconducting thin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:8344-8348. [PMID: 10002597 DOI: 10.1103/physrevb.46.8344] [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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19
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Hao X, Moodera JS, Meservey R. Thin-film superconductor in an exchange field. PHYSICAL REVIEW LETTERS 1991; 67:1342-1345. [PMID: 10044121 DOI: 10.1103/physrevlett.67.1342] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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20
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Choi CH, Sauls JA. Identification of odd-parity superconductivity in UPt3 from paramagnetic effects on the upper critical field. PHYSICAL REVIEW LETTERS 1991; 66:484-487. [PMID: 10043819 DOI: 10.1103/physrevlett.66.484] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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21
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Hao X, Moodera JS, Meservey R. Spin-filter effect of ferromagnetic europium sulfide tunnel barriers. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:8235-8243. [PMID: 9994996 DOI: 10.1103/physrevb.42.8235] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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22
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Choi CH, Muzikar P. Impurity magnetic moments in unconventional superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 41:1812-1815. [PMID: 9993907 DOI: 10.1103/physrevb.41.1812] [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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23
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Gibson GA, Meservey R. Evidence for spin fluctuations in vanadium from a tunneling study of Fermi-liquid effects. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:8705-8713. [PMID: 9991348 DOI: 10.1103/physrevb.40.8705] [Citation(s) in RCA: 5] [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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Choi CH, Muzikar P. Gradient free energy and intrinsic angular momentum in unconventional superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:5144-5146. [PMID: 9992513 DOI: 10.1103/physrevb.40.5144] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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25
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Gibson GA, Tedrow PM, Meservey R. Tunneling study of Fermi-liquid effects in amorphous gallium. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:137-147. [PMID: 9990896 DOI: 10.1103/physrevb.40.137] [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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26
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Choi CH, Muzikar P. Theory of the superfluid density tensor in unconventional superconductors: Impurity scattering and band-structure effects. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 39:11296-11300. [PMID: 9947956 DOI: 10.1103/physrevb.39.11296] [Citation(s) in RCA: 8] [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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Tokuyasu T, Sauls JA, Rainer D. Proximity effect of a ferromagnetic insulator in contact with a superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 38:8823-8833. [PMID: 9945659 DOI: 10.1103/physrevb.38.8823] [Citation(s) in RCA: 192] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Tkaczyk JE, Tedrow PM. Spin-polarized tunneling study of s-f exchange in superconductors. PHYSICAL REVIEW LETTERS 1988; 61:1253-1256. [PMID: 10038741 DOI: 10.1103/physrevlett.61.1253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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29
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Moodera JS, Hao X, Gibson GA, Meservey R. Electron-spin polarization in tunnel junctions in zero applied field with ferromagnetic EuS barriers. PHYSICAL REVIEW LETTERS 1988; 61:637-640. [PMID: 10039387 DOI: 10.1103/physrevlett.61.637] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Choi CH, Muzikar P. Superfluid density tensor in unconventional superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:5947-5949. [PMID: 9943817 DOI: 10.1103/physrevb.37.5947] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Moodera JS, Tedrow PM, Tkaczyk JE. High-magnetic-field study of superconducting YBa2Cu. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:8329-8332. [PMID: 9942647 DOI: 10.1103/physrevb.36.8329] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Choi CH, Muzikar P. Current-carrying state in a polar-phase superconductor at T=0. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:54-57. [PMID: 9942027 DOI: 10.1103/physrevb.36.54] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Orlando TP, Delin KA, Foner S, McNiff EJ, Tarascon JM, Greene LH, McKinnon WR, Hull GW. Upper critical fields of high-Tc superconducting Y2-xBax. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 35:7249-7251. [PMID: 9941015 DOI: 10.1103/physrevb.35.7249] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Kieselmann G. Self-consistent calculations of the pair potential and the tunneling density of states in proximity contacts. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 35:6762-6770. [PMID: 9940926 DOI: 10.1103/physrevb.35.6762] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Orlando TP, Delin KA, Foner S, McNiff EJ, Tarascon JM, Greene LH, McKinnon WR, Hull GW. Upper critical fields of high-Tc superconducting La2-xSrxCuO4-y: Possibility of 140 tesla. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 35:5347-5349. [PMID: 9940733 DOI: 10.1103/physrevb.35.5347] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Alexander JA, Tedrow PM, Orlando TP. Spin-orbit scattering measurements from localization and superconducting tunneling. PHYSICAL REVIEW. B, CONDENSED MATTER 1986; 34:8157-8159. [PMID: 9939516 DOI: 10.1103/physrevb.34.8157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Rainer D. Chapter 4: Principles of AB Initio Calculations of Superconducting Transition Temperatures. PROGRESS IN LOW TEMPERATURE PHYSICS 1986. [DOI: 10.1016/s0079-6417(08)60024-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Rainer D, Bergmann G. Multiband effects in weak localization. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:3522-3529. [PMID: 9937496 DOI: 10.1103/physrevb.32.3522] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Hertel GB, Orlando TP. Determination of the Zeeman splitting in superconductors by Fourier analysis of tunneling data. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:166-170. [PMID: 9936652 DOI: 10.1103/physrevb.32.166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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