Superconductors with broken time-reversal symmetry: Spontaneous magnetization and quantum Hall effects
Baruch Horovitz, Anatoly Golub
DOI 10.1103/PhysRevB.68.214503 · Physical Review B
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Abstract
Broken time-reversal symmetry (BTRS) in d+id′ as well as in d+is superconductors is studied and is shown to yield current carrying surface states. We evaluate the temperature and thickness dependence of the resulting spontaneous magnetization and show a marked difference between weak and strong BTRS. We also derive the Hall conductance which vanishes at zero wave vector q and finite frequency ω; however, at finite q,ω it has an unusual structure. The chirality of the surface states leads to quantum Hall effects for spin and heat transport in d+id′ superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3Ox 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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