Broken time-reversal symmetry and superconducting states in the cuprates
R. P. Kaur, D. F. Agterberg
DOI 10.1103/PhysRevB.68.100506 · Physical Review B
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Abstract
Recently, Kaminski et al. have reported that time-reversal symmetry is broken in the pseudogap phase in the high-temperature superconducting material Bi2Sr2CaCu2O2+δ (Bi-2212). Here we examine the role of translationally invariant broken time-reversal states on dx2−y2 superconductors. In particular, we determine the change in the superconducting order parameter structure. We find that the broken time-reversal pseudogap state that is consistent with the experiment of Kaminski et al. gives rise to a mixed singlet-triplet pairing d+ip phase. This d+ip state is shown to give rise to a helical superconducting phase. Consequences of this d+ip state on Josephson experiments are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ 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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