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DOI | 10.1126/science.aal1575 |
Discovery of orbital-selective Cooper pairing in FeSe | |
Sprau, P. O.1,2; Kostin, A.1,2; Kreisel, A.3,4; Bohmer, A. E.5; Taufour, V.5,11; Canfield, P. C.5,6; Mukherjee, S.7,12; Hirschfeld, P. J.8; Andersen, B. M.3; Davis, J. C. Seamus1,2,9,10 | |
2017-07-07 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 357期号:6346页码:76-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Denmark; Germany; Scotland; Ireland; India |
英文摘要 | The superconductor iron selenide (FeSe) is of intense interest owing to its unusual nonmagnetic nematic state and potential for high-temperature superconductivity. But its Cooper pairing mechanism has not been determined. We used Bogoliubov quasiparticle interference imaging to determine the Fermi surface geometry of the electronic bands surrounding the Gamma = ( 0, 0) and X = (pi/a(Fe), 0) points of FeSe and to measure the corresponding superconducting energy gaps. We show that both gaps are extremely anisotropic but nodeless and that they exhibit gap maxima oriented orthogonally in momentum space. Moreover, by implementing a novel technique, we demonstrate that these gaps have opposite sign with respect to each other. This complex gap configuration reveals the existence of orbital-selective Cooper pairing that, in FeSe, is based preferentially on electrons from the d(yz) orbitals of the iron atoms. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416909500005 |
WOS关键词 | QUASI-PARTICLE INTERFERENCE ; IRON CHALCOGENIDES ; SUPERCONDUCTIVITY ; NEMATICITY ; FRUSTRATION ; SYMMETRY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/196402 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Cornell Univ, Dept Phys, Lab Atom & Solid State Phys, Ithaca, NY 14853 USA; 2.Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA; 3.Univ Copenhagen, Niels Bohr Inst, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark; 4.Univ Leipzig, Inst Theoret Phys, D-04103 Leipzig, Germany; 5.US DOE, Ames Lab, Ames, IA 50011 USA; 6.Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA; 7.SUNY Binghamton, Dept Phys, Binghamton, NY 13902 USA; 8.Univ Florida, Dept Phys, Gainesville, FL 32611 USA; 9.Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland; 10.Univ Coll Cork, Tyndall Natl Inst, Cork T12 R5C, Ireland; 11.Univ Calif Davis, Dept Phys, Davis, CA 95616 USA; 12.Indian Inst Technol, Dept Phys, Madras 600036, Tamil Nadu, India |
推荐引用方式 GB/T 7714 | Sprau, P. O.,Kostin, A.,Kreisel, A.,et al. Discovery of orbital-selective Cooper pairing in FeSe[J]. SCIENCE,2017,357(6346):76-+. |
APA | Sprau, P. O..,Kostin, A..,Kreisel, A..,Bohmer, A. E..,Taufour, V..,...&Davis, J. C. Seamus.(2017).Discovery of orbital-selective Cooper pairing in FeSe.SCIENCE,357(6346),76-+. |
MLA | Sprau, P. O.,et al."Discovery of orbital-selective Cooper pairing in FeSe".SCIENCE 357.6346(2017):76-+. |
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