Unconventional superconducting pairing symmetry induced by phonons
I. Schnell, I. I. Mazin, Amy Y. Liu
DOI 10.1103/PhysRevB.74.184503 · Physical Review B
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Abstract
The possibility of non-s-wave superconductivity induced by phonons is investigated using a simple model that is inspired by Sr2RuO4. The model assumes a two-dimensional electronic structure, a two-dimensional spin-fluctuation spectrum, and three-dimensional electron-phonon coupling. Taken separately, each interaction favors formation of spin-singlet pairs (of s symmetry for the phonon interaction and dx2−y2 symmetry for the spin interaction), but in combination, a variety of more unusual singlet and triplet states are found, depending on the interaction parameters. These results suggest that phonons could play a key role in establishing the order-parameter symmetry in Sr2RuO4, and possibly in other unconventional superconductors.
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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