Low-temperature electronic properties of Sr2RuO4. II. Superconductivity
Ralph Werner
DOI 10.1103/PhysRevB.67.014505 · Physical Review B
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Abstract
The body centered tetragonal structure of Sr2RuO4 gives rise to umklapp scattering enhanced interplane pair correlations in the dyz and dzx orbitals. Based on symmetry arguments, Hund’s rule coupling, and a bosonized description of the in-plane electron correlations the superconducting order parameter is found to be a orbital-singlet spin-triplet with two spatial components. The spatial anisotropy is 7%. The different components of the order parameter give rise to two-dimensional gapless fluctuations. The phase transition is of third order. The temperature dependence of the pair density, specific heat, nuclear quadrupole resonance, Knight shift, and susceptibility are in agreement with experimental results.
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. | 1.5 | Pressure unresolved | onset |
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