A proposal for reconciling diverse experiments on the superconducting state in Sr2RuO4

被引：108

作者：

Kivelson, Steven Allan ^{[1
,2
]}

Yuan, Andrew Chang ^{[1
,2
]}

Ramshaw, Brad ^{[3
]}

Thomale, Ronny ^{[4
,5
]}

机构：

[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[2] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[3] Cornell Univ, Lab Atom & Solid State Phys, Ithaca, NY 14853 USA

[4] Julius Maximilians Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany

[5] Julius Maximilians Univ Wurzburg, Wurzburg Dresden Cluster Excellence Ctqmat, D-97074 Wurzburg, Germany

来源：

NPJ QUANTUM MATERIALS | 2020年 / 5卷 / 01期

基金：

美国国家科学基金会;

关键词：

T-C; DEPENDENCE;

D O I：

10.1038/s41535-020-0245-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A variety of precise experiments have been carried out to establish the character of the superconducting state in Sr2RuO4. Many of these appear to imply contradictory conclusions concerning the symmetries of this state. Here we propose that these results can be reconciled if we assume that there is a near-degeneracy between a d(x2-y2) (B-1g in group theory nomenclature) and a g(xy)(x(2)-y(2))(A(2g)) superconducting state. From a weak-coupling perspective, such an accidental degeneracy can occur at a point at which a balance between the on-site and nearest-neighbor repulsions triggers a d-wave to g-wave transition.

引用

页数：8

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