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Shirage PM, Kihou K, Miyazawa K, Lee CH, Kito H, Eisaki H, Yanagisawa T, Tanaka Y, Iyo A. Inverse iron isotope effect on the transition temperature of the (Ba,K)Fe2As2 superconductor. PHYSICAL REVIEW LETTERS 2009; 103:257003. [PMID: 20366277 DOI: 10.1103/physrevlett.103.257003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Indexed: 05/29/2023]
Abstract
We report that the (Ba,K)Fe(2)As(2) superconductor (transition temperature, T(c) approximately 38 K) has an inverse iron isotope coefficient alpha(Fe) = -0.18(3) (where T(c) approximately M(-alphaFe) and M is the iron isotope mass); i.e., the sample containing the large iron isotope mass depicts a higher T(c). Systematic inverse shifts in T(c) were clearly observed between the samples using three types of Fe isotopes ((54)Fe, natural Fe, and (57)Fe). This indicates the first evidence of the inverse isotope effect in high-T(c) superconductors. This anomalous mass dependence on T(c) implies an exotic coupling mechanism in Fe-based superconductors.
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Affiliation(s)
- Parasharam M Shirage
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan.
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Shen ZX, Lanzara A, Ishihara S, Nagaosa N. Role of the electron-phonon interaction in the strongly correlated cuprate superconductors. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/13642810208220725] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Z.-X. Shen
- a Department of Physics, Applied Physics and Stanford Synchrotron Radiation Laboratory , Stanford University , California , 94305 , USA
| | - A. Lanzara
- a Department of Physics, Applied Physics and Stanford Synchrotron Radiation Laboratory , Stanford University , California , 94305 , USA
- b Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley , California , 94720 , USA
| | - S. Ishihara
- c Department of Applied Physics , University of Tokyo , Bunkyo-ku, Tokyo , 113-8656 , Japan
| | - N. Nagaosa
- c Department of Applied Physics , University of Tokyo , Bunkyo-ku, Tokyo , 113-8656 , Japan
- d Correlated Electron Research Center, Agency of Industrial Science and Technology , Tsukuba , 305-0046 , Japan
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Gweon GH, Sasagawa T, Zhou SY, Graf J, Takagi H, Lee DH, Lanzara A. An unusual isotope effect in a high-transition-temperature superconductor. Nature 2004; 430:187-90. [PMID: 15241409 DOI: 10.1038/nature02731] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2004] [Accepted: 06/07/2004] [Indexed: 11/09/2022]
Abstract
In conventional superconductors, the electron pairing that allows superconductivity is caused by exchange of virtual phonons, which are quanta of lattice vibration. For high-transition-temperature (high-T(c)) superconductors, it is far from clear that phonons are involved in the pairing at all. For example, the negligible change in T(c) of optimally doped Bi2Sr2CaCu2O8+delta (Bi2212; ref. 1) upon oxygen isotope substitution (16O --> 18O leads to T(c) decreasing from 92 to 91 K) has often been taken to mean that phonons play an insignificant role in this material. Here we provide a detailed comparison of the electron dynamics of Bi2212 samples containing different oxygen isotopes, using angle-resolved photoemission spectroscopy. Our data show definite and strong isotope effects. Surprisingly, the effects mainly appear in broad high-energy humps, commonly referred to as 'incoherent peaks'. As a function of temperature and electron momentum, the magnitude of the isotope effect closely correlates with the superconducting gap--that is, the pair binding energy. We suggest that these results can be explained in a dynamic spin-Peierls picture, where the singlet pairing of electrons and the electron-lattice coupling mutually enhance each other.
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Affiliation(s)
- G-H Gweon
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Zhao G, Kirtikar V, Singh KK, Sinha AP, Morris DE, Inyushkin AV. Large copper isotope effect in oxygen depleted YBa2Cu3Oy: Importance of Cu-dominated phonon modes in the pairing mechanism. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:14956-14959. [PMID: 9985545 DOI: 10.1103/physrevb.54.14956] [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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Fisher RA, Gordon JE, Phillips NE. SOME CHEMICAL AND STRUCTURAL EFFECTS ON THE PROPERTIES OF HIGH-Tc SUPERCONDUCTORS. Annu Rev Phys Chem 1996. [DOI: 10.1146/annurev.physchem.47.1.283] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
▪ Abstract The history of superconductivity, including superconductivity in the high-Tc cuprates, is reviewed very briefly, and the differences between conventional superconductors and the high-Tc cuprates are summarized. The basic crystal structures of the major series of high-Tc cuprates are described and compared. The relation of structures to superconducting properties is reviewed with an emphasis on the orthorhombic-tetragonal transition in (La2−x Srx)CuO4; the corresponding transition, and also the transition to the low-temperature tetragonal phase in (La2−xBax)CuO4; and the effects of oxygen vacancies, oxygen-vacancy ordering, frozen-in disorder, and occupation of the off-chain O(5) sites in YBa2Cu3O7−δ. The effects of chemical substitutions of lanthanide elements on the La/Sr sites in (La2−xSrx)CuO4 and on the Y sites in YBa2Cu3O7−δ, and of 3d elements and sp elements on the Cu sites in both systems are reviewed. The difference between the effects of the lanthanide substitutions, particularly Pr, in the two systems are considered. Major properties of the Bi-, Tl-, and Hg-cuprates, are described briefly. A comparison of the high-Tc cuprates with noncuprate oxide superconductors is given.
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Affiliation(s)
- R. A. Fisher
- Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - J. E. Gordon
- Lawrence Berkeley National Laboratory, Berkeley, California 94720
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Schüttler H, Pao C. Isotope effect in d-wave superconductors. PHYSICAL REVIEW LETTERS 1995; 75:4504-4507. [PMID: 10059925 DOI: 10.1103/physrevlett.75.4504] [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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Hocquet T, Jardin J, Germain P, Labbé J. Dependence of Tc on the physical parameters in single-layered copper oxides. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:10330-10335. [PMID: 9980084 DOI: 10.1103/physrevb.52.10330] [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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Zhao G, Singh KK, Sinha AP, Morris DE. Oxygen isotope effect on the effective mass of carriers from magnetic measurements on La2-xSrxCuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:6840-6844. [PMID: 9981913 DOI: 10.1103/physrevb.52.6840] [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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Yndurain F. Model for the variation upon doping of the isotope coefficient in high-Tc superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:8494-8497. [PMID: 9977463 DOI: 10.1103/physrevb.51.8494] [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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Koyama Y, Wakabayashi Y, Ito K, Inoue Y. Low-temperature structural transitions and Tc suppression in La2-xMxCuO4 (M=Ba, Sr). PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:9045-9051. [PMID: 9977544 DOI: 10.1103/physrevb.51.9045] [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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Zhao G, Morris DE. Sizable oxygen isotope effects in the electron-doped Pr1.85Ce0.15CuO4-y. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:3454-3457. [PMID: 9976610 DOI: 10.1103/physrevb.50.3454] [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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Zhao G, Singh KK, Morris DE. Oxygen isotope effect on Néel temperature in various antiferromagnetic cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:4112-4117. [PMID: 9976694 DOI: 10.1103/physrevb.50.4112] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Krishnamurthy HR, Newns DM, Pattnaik PC, Tsuei CC, Chi CC. Vertex correction to pairing at a Van Hove singularity. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:3520-3523. [PMID: 10011217 DOI: 10.1103/physrevb.49.3520] [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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Franck JP, Harker S, Brewer JH. Copper and oxygen isotope effects in La2-xSrxCuO4. PHYSICAL REVIEW LETTERS 1993; 71:283-286. [PMID: 10054910 DOI: 10.1103/physrevlett.71.283] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Crespi VH, Cohen ML. Anharmonic phonons and high-temperature superconductivity. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:398-406. [PMID: 10006790 DOI: 10.1103/physrevb.48.398] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Li Q, Suenaga M, Kimura T, Kishio K. Reversible magnetic properties of (La1-xSrx)2CuO4 single crystals with 0.05 <= x <= 0.10. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:11384-11390. [PMID: 10005276 DOI: 10.1103/physrevb.47.11384] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Penn DR, Cohen ML, Crespi VH. Inverse isotope effects and models for high-Tc superconductivity. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:5528-5530. [PMID: 10006737 DOI: 10.1103/physrevb.47.5528] [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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Ozhogin V, Babushkina N, Inyushkin A, Taldenkov A, Molchanova L. Anomalously enhanced oxygen isotope effect in La1.85Sr0.15CuO4 doped with Fe. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0964-1807(93)90245-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lorenzana J, Yu L. Optical conductivity of La2-xSrxCuO4 and soft electronic modes. PHYSICAL REVIEW LETTERS 1993; 70:861-864. [PMID: 10054222 DOI: 10.1103/physrevlett.70.861] [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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Alexandrov AS. Transition from Fermi liquid to charged Bose liquid: A possible explanation of the isotope shift in high-Tc oxides. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:14932-14935. [PMID: 10003605 DOI: 10.1103/physrevb.46.14932] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Nakamura Y, Uchida S. Anisotropic transport properties of single-crystal La2-x-yNdySrxCuO4: Effect of the structural phase transition. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:5841-5844. [PMID: 10004395 DOI: 10.1103/physrevb.46.5841] [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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Newns DM, Krishnamurthy HR, Pattnaik PC, Tsuei CC, Kane CL. Saddle-point pairing: An electronic mechanism for superconductivity. PHYSICAL REVIEW LETTERS 1992; 69:1264-1267. [PMID: 10047169 DOI: 10.1103/physrevlett.69.1264] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Xiong Q, Chu JW, Sun YY, Feng HH, Bud'ko S, Hor PH, Chu CW. High-pressure study of the anomalous isotope effect in La2-xAxCuO4 with A=Sr or Ba. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:581-584. [PMID: 10002263 DOI: 10.1103/physrevb.46.581] [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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Klein BM, Cohen RE. Anharmonicity and the inverse isotope effect in the palladium-hydrogen system. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:12405-12414. [PMID: 10001277 DOI: 10.1103/physrevb.45.12405] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Loong C, Vashishta P, Kalia RK, Jin W, Degani MH, Hinks DG, Price DL, Jorgensen JD, Dabrowski B, Mitchell AW, Richards DR, Zheng Y. Phonon density of states and oxygen-isotope effect in Ba1-xKxBiO3. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:8052-8064. [PMID: 10000616 DOI: 10.1103/physrevb.45.8052] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Jin W, Degani MH, Kalia RK, Vashishta P. Superconductivity in Ba1-xKxBiO3. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:5535-5546. [PMID: 10000271 DOI: 10.1103/physrevb.45.5535] [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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Liverman WJ, Huber JG, Moodenbaugh AR, Xu Y. Superconductivity under pressure of La2-xBaxCuO4 (0.05 <= x <= 0.25) and Nd1.85Ce0.15CuO4- delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:4897-4900. [PMID: 10002128 DOI: 10.1103/physrevb.45.4897] [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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Tsuei CC, Newns DM, Chi CC, Pattnaik PC. Tsuei et al. reply. PHYSICAL REVIEW LETTERS 1992; 68:1091. [PMID: 10046077 DOI: 10.1103/physrevlett.68.1091] [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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Ultrasonic Propagation in Sintered High-Tc Superconductors. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/b978-0-12-477920-4.50011-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Ronay M, Frisch MA, McGuire TR. Isotope effect in La2-xSrxCuO4 superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:355-360. [PMID: 10000185 DOI: 10.1103/physrevb.45.355] [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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Singh DJ, Papaconstantopoulos DA, Julien JP, Cyrot-Lackmann F. Electronic structure of Ba(Sn,Sb)O3: Absence of superconductivity. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:9519-9523. [PMID: 9998936 DOI: 10.1103/physrevb.44.9519] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Nasu K. Suppressed metal-insulator transitions, enhanced superconductivity, and reduced isotope effect due to quartic anharmonicity of phonons in a Peierls-Hubbard model. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:7625-7636. [PMID: 9998678 DOI: 10.1103/physrevb.44.7625] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Crawford MK, Harlow RL, McCarron EM, Farneth WE, Axe JD, Chou H, Huang Q. Lattice instabilities and the effect of copper-oxygen-sheet distortions on superconductivity in doped La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:7749-7752. [PMID: 9998700 DOI: 10.1103/physrevb.44.7749] [Citation(s) in RCA: 108] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Bussmann-Holder A, Bishop AR. Anharmonicity-induced multiphonon processes in high-temperature superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:2853-2856. [PMID: 9999869 DOI: 10.1103/physrevb.44.2853] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Saylor J, Hohenemser C. Saylor and Hohenemser reply. PHYSICAL REVIEW LETTERS 1991; 67:526. [PMID: 10044918 DOI: 10.1103/physrevlett.67.526] [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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Pickett WE, Cohen RE, Krakauer H. Lattice instabilities, isotope effect, and high-Tc superconductivity in La2-xBaxCuO4. PHYSICAL REVIEW LETTERS 1991; 67:228-231. [PMID: 10044527 DOI: 10.1103/physrevlett.67.228] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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