Impurities and orbital-dependent superconductivity in Sr2RuO4
D. F. Agterberg
DOI 10.1103/PhysRevB.60.R749 · Physical Review B
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Abstract
There now exists a wealth of experimental evidence that Sr2RuO4 is an odd-parity superconductor. Experiments further indicate that among the bands stemming from the Ru {xy,xz,yz} orbitals, the portion of the Fermi surface arising from the xy orbitals exhibits a much larger gap than the portions of the Fermi surface arising from the {xz,yz} orbitals. In this paper the role of impurities in such an orbital-dependent superconducting state is examined within the Born approximation. In contrast to expected results for a nodeless p-wave superconductor, the unique nature of the superconducting state in Sr2RuO4 implies that a low concentration of impurities strongly influences the low-temperature behavior.
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 not reported | unknown |
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