Ground state of the three-dimensional BCS d-wave superconductor
Igor F. Herbut, Igor Boettcher, Subrata Mandal
DOI 10.1103/PhysRevB.100.104503 · Physical Review B
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Abstract
We determine the mean-field ground state of the three-dimensional rotationally symmetric d-wave (ℓ=2) superconductor at weak coupling. It is a noninert state, invariant under the symmetry C2 only, which breaks time-reversal symmetry almost maximally, and features a high but again less-than-maximal average magnetization. The state obtained by minimization of the expanded sixth-order Ginzburg–Landau free energy is found to be an excellent approximation to the true ground state. The coupling to a parasitic s-wave component has only a minuscule quantitative and no qualitative effect on the ground state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YPtBi 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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