Odd-frequency pairing and Kerr effect in the heavy-fermion superconductor UPt3
Christopher Triola, Annica M. Black-Schaffer
DOI 10.1103/PhysRevB.97.064505 · Physical Review B
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Abstract
We study the emergence of odd-frequency superconducting pairing in UPt3. Starting from a tight-binding model accounting for the nonsymmorphic crystal symmetry of UPt3 and assuming an order parameter in the E2u representation, we demonstrate that odd-frequency pairing arises very generally, as soon as intersublattice hopping or spin-orbit coupling is present. We also show that in the low temperature superconducting B phase, the presence of a chiral order parameter together with spin-orbit coupling, leads to additional odd-frequency pair amplitudes not present in the A or C phases. Furthermore, we show that a finite Kerr rotation in the B phase is only present if odd-ω pairing also exists.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.55 | Pressure not reported | onset |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.5 | Pressure not reported | midpoint |
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