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Schneider R, Zaitsev AG, Fuchs D, V Löhneysen H. Superconductor-insulator quantum phase transition in disordered FeSe thin films. PHYSICAL REVIEW LETTERS 2012; 108:257003. [PMID: 23004643 DOI: 10.1103/physrevlett.108.257003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Indexed: 06/01/2023]
Abstract
The evolution of two-dimensional electronic transport with increasing disorder in epitaxial FeSe thin films is studied. Disorder is generated by reducing the film thickness. The extreme sensitivity of the films to disorder results in a superconductor-insulator transition. The finite-size scaling analysis in the critical regime based on the Bose-glass model strongly supports the idea of a continuous quantum phase transition. The obtained value for the critical-exponent product of approximately 7/3 suggests that the transition is governed by quantum percolation. Finite-size scaling with the same critical-exponent product is also substantiated when the superconductor-insulator transition is tuned with an applied magnetic field.
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Affiliation(s)
- R Schneider
- Institut für Festkörperphysik, Karlsruher Institut für Technologie, D-76021 Karlsruhe, Germany.
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Leng X, Garcia-Barriocanal J, Bose S, Lee Y, Goldman AM. Electrostatic control of the evolution from a superconducting phase to an insulating phase in ultrathin YBa₂Cu₃O(7-x) films. PHYSICAL REVIEW LETTERS 2011; 107:027001. [PMID: 21797633 DOI: 10.1103/physrevlett.107.027001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Indexed: 05/31/2023]
Abstract
The electrical transport properties of ultrathin YBa₂Cu₃O(7-x) films have been modified using an electric double layer transistor configuration employing an ionic liquid. A clear evolution from superconductor to insulator was observed in nominally 7 unit-cell-thick films. Using a finite size scaling analysis, curves of resistance versus temperature, R(T), over the temperature range from 6 to 22 K were found to collapse onto a single scaling function, which suggests the presence of a quantum critical point. However, the scaling fails at the lowest temperatures indicating the possible presence of an additional phase between the superconducting and insulating regimes.
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Affiliation(s)
- Xiang Leng
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Bollinger AT, Dubuis G, Yoon J, Pavuna D, Misewich J, Božović I. Superconductor–insulator transition in La2 − xSr x CuO4 at the pair quantum resistance. Nature 2011; 472:458-60. [DOI: 10.1038/nature09998] [Citation(s) in RCA: 393] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Accepted: 03/11/2011] [Indexed: 11/09/2022]
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Orgiani P, Aruta C, Balestrino G, Born D, Maritato L, Medaglia PG, Stornaiuolo D, Tafuri F, Tebano A. Direct measurement of sheet resistance Rsquare in cuprate systems: evidence of a fermionic scenario in a metal-insulator transition. PHYSICAL REVIEW LETTERS 2007; 98:036401. [PMID: 17358700 DOI: 10.1103/physrevlett.98.036401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2006] [Indexed: 05/14/2023]
Abstract
The metal-insulator transition (MIT) has been studied in Ba(0.9)Nd(0.1)CuO(2+x)/CaCuO2 ultrathin cuprate structures. Such structures allow for the direct measurement of the 2D sheet resistance R( square), eliminating ambiguity in the definition of the effective thickness of the conducting layer in high temperature superconductors. The MIT occurs at room temperature for experimental values of R(square) close to the 25.8 kOmega universal quantum resistance. All data confirm the assumption that each CaCuO2 layer forms a 2D superconducting sheet within the superconducting block, which can be described as weak-coupled equivalent sheets in parallel.
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Affiliation(s)
- P Orgiani
- CNR-INFM Supermat and Department of Physics, University of Salerno, Baronissi (SA), Italy
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Heeger AJ. Semiconducting and Metallic Polymers: The Fourth Generation of Polymeric Materials. J Phys Chem B 2001. [DOI: 10.1021/jp011611w] [Citation(s) in RCA: 581] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alan J. Heeger
- Department of Physics, Materials Department, Institute for Polymers and Organic Solids, University of California, Santa Barbara, Santa Barbara, California 93106
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Heeger AJ. Semiconducting and Metallic Polymers: The Fourth Generation of Polymeric Materials (Nobel Lecture). Angew Chem Int Ed Engl 2001; 40:2591-2611. [DOI: 10.1002/1521-3773(20010716)40:14<2591::aid-anie2591>3.0.co;2-0] [Citation(s) in RCA: 1273] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2001] [Indexed: 11/11/2022]
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Tolpygo SK, Lin J, Gurvitch M, Hou SY, Phillips JM. Universal Tc suppression by in-plane defects in high-temperature superconductors: Implications for pairing symmetry. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:12454-12461. [PMID: 9982879 DOI: 10.1103/physrevb.53.12454] [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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Okuma S, Kokubo N. Unusual insulating phase at low temperature in thin indium films. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:15415-15419. [PMID: 9978501 DOI: 10.1103/physrevb.51.15415] [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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Inoue M, Matsushita H, Hayakawa H, Ohbayashi K. Critical sheet resistance and two-dimensional properties of Bi2Sr2CuOx thin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:15448-15455. [PMID: 9978504 DOI: 10.1103/physrevb.51.15448] [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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Wallin M, Sorensen ES, Girvin SM, Young AP. Superconductor-insulator transition in two-dimensional dirty boson systems. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:12115-12139. [PMID: 10010086 DOI: 10.1103/physrevb.49.12115] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Cha MC, Girvin SM. Universal conductivity in the boson Hubbard model in a magnetic field. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9794-9801. [PMID: 10009780 DOI: 10.1103/physrevb.49.9794] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wang T, Beauchamp KM, Mack AM, Israeloff NE, Spalding GC, Goldman AM. Anomalous magnetoresistance of ultrathin films of DyBa2Cu3O7-x near the superconductor-insulator transition. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:11619-11622. [PMID: 10005325 DOI: 10.1103/physrevb.47.11619] [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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Kudinov VI, Chaplygin IL, Kirilyuk AI, Kreines NM, Laiho R, Lähderanta E, Ayache C. Persistent photoconductivity in YBa2Cu3O6+x films as a method of photodoping toward metallic and superconducting phases. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:9017-9028. [PMID: 10004951 DOI: 10.1103/physrevb.47.9017] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Liu Y, Haviland DB, Nease B, Goldman AM. Insulator-to-superconductor transition in ultrathin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:5931-5946. [PMID: 10004542 DOI: 10.1103/physrevb.47.5931] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Obertelli SD, Cooper JR, Tallon JL. Systematics in the thermoelectric power of high-Tc oxides. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:14928-14931. [PMID: 10003604 DOI: 10.1103/physrevb.46.14928] [Citation(s) in RCA: 191] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Halley JW, Wang XF, Davis S. Mean-field calculations of the properties of the dilute t-J model for high-temperature superconductivity. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:6560-6571. [PMID: 10002345 DOI: 10.1103/physrevb.46.6560] [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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Sorensen ES, Wallin M, Girvin SM, Young AP. Universal conductivity of dirty bosons at the superconductor-insulator transition. PHYSICAL REVIEW LETTERS 1992; 69:828-831. [PMID: 10047043 DOI: 10.1103/physrevlett.69.828] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Lyra ML. Phase diagrams of magnetically disordered bilayers. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:3420-3426. [PMID: 10004058 DOI: 10.1103/physrevb.46.3420] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gold A. Dynamical conductivity of the two-dimensional Bose condensate: Superfluid-insulator transition for a long-range random potential. ACTA ACUST UNITED AC 1992. [DOI: 10.1007/bf01315645] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Seidler GT, Rosenbaum TF, Veal BW. Two-dimensional superconductor-insulator transition in bulk single-crystal YBa2Cu3O6.38. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:10162-10164. [PMID: 10000918 DOI: 10.1103/physrevb.45.10162] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yu G, Lee CH, Heeger AJ, Herron N, McCarron EM, Cong L, Spalding GC, Nordman CA, Goldman AM. Phase separation of photogenerated carriers and photoinduced superconductivity in high-Tc materials. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:4964-4977. [PMID: 10002139 DOI: 10.1103/physrevb.45.4964] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yu G, Lee CH, Heeger AJ, Herron N, McCarron EM. Transient photoinduced conductivity in single crystals of YBa2Cu3O6.3: "Photodoping" to the metallic state. PHYSICAL REVIEW LETTERS 1991; 67:2581-2584. [PMID: 10044462 DOI: 10.1103/physrevlett.67.2581] [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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Liu Y, McGreer KA, Nease B, Haviland DB, Martinez G, Halley JW, Goldman AM. Scaling of the insulator-to-superconductor transition in ultrathin amorphous Bi films. PHYSICAL REVIEW LETTERS 1991; 67:2068-2071. [PMID: 10044327 DOI: 10.1103/physrevlett.67.2068] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Cha MC, Fisher MP, Girvin SM, Wallin M, Young AP. Universal conductivity of two-dimensional films at the superconductor-insulator transition. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:6883-6902. [PMID: 9998569 DOI: 10.1103/physrevb.44.6883] [Citation(s) in RCA: 163] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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