Normal state, superconductivity and quasiparticle Fermi surface of the strongly correlated oxide Sr2RuO4

被引:27
作者
Julian, SR
Mackenzie, AP
Lonzarich, GG
Bergemann, C
Haselwimmer, RKW
Maeno, Y
NishiZaki, S
Tyler, AW
Ikeda, S
Fujita, T
机构
[1] Univ Cambridge, Dept Phys, Cambridge CB3 0HE, England
[2] Univ Cambridge, IRC Superconduct, Cambridge CB3 0HE, England
[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
[4] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan
[5] Hiroshima Univ, Dept Phys, Higashihiroshima 7390046, Japan
基金
英国工程与自然科学研究理事会;
关键词
superconductivity; quantum oscillations; spin fluctuations;
D O I
10.1016/S0921-4526(98)00820-5
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The oxide superconductor Sr2RuO4 is emerging as an archetypal strongly correlated electron system. We review the experimental situation, focusing on Fermi surface specific probes. Quantum oscillation measurements have revealed a Fermi surface consisting of three slightly warped cylinders populated by quasiparticles with masses ranging from 3.4 to 14.6 times the bare electron mass. Then is strong evidence that Sr2RuO4 is a spin-triplet superconductor, and the simplicity of the Fermi surface combined with detailed knowlege of the quasiparticle properties from quantum oscillation and orbital specific NMR measurements means that Sr2RuO4 may be a key system for understanding unconventional superconductivity. We compare Sr2RuO4 With three-dimensional nearly ferromagnetic 3d-metals, and suggest that quasi-tno-dimensional spin-fluctuations may be responsible for the fact that Sr2RuO4 is the first nearly ferromagnetic metal to show superconductivity. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:928 / 933
页数:6
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