Superconducting pairing in Sr2RuO4 from weak to intermediate coupling
Li-Da Zhang, Wen Huang, Fan Yang, Hong Yao
DOI 10.1103/PhysRevB.97.060510 · Physical Review B
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Abstract
The unconventional superconductivity in Sr2RuO4 continues to attract considerable interest. Although many measurements can be interpreted on the basis of chiral p-wave pairing with intriguing topological character, a number of exceptions hinder an unambiguous verification of such pairing. The pairing mechanism also remains under debate. In this Rapid Communication, with effects of the sizable spin-orbit coupling accounted for, we reexamine the superconducting instabilities in Sr2RuO4 through systematic microscopic analysis within the random-phase approximation. Our calculations show that the odd-parity p-wave pairing is favored in the regime of extremely weak interactions, but that highly anisotropic even-parity pairings become most leading over a broad range of stronger interactions. These results could shed light on the nature of the enigmatic superconductivity in Sr2RuO4.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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