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

Cornell Affiliated Author(s)

Author

S.A. Kivelson
A.C. Yuan
B. Ramshaw
R. Thomale

Abstract

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 dx2−y2 (B1g in group theory nomenclature) and a gxy(x2−y2) (A2g) 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. © 2020, The Author(s).

Date Published

Journal

npj Quantum Materials

Volume

5

Issue

1

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087166436&doi=10.1038%2fs41535-020-0245-1&partnerID=40&md5=eebd5012bdbcf40cce9787b8988dd35d

DOI

10.1038/s41535-020-0245-1

Group (Lab)

Brad Ramshaw Group

Funding Source

DMR-1608055
DMR-1752784
1752784
DE-AC02-76SF00515
258499086 - SFB 1170
39085490 - EXC 2147

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