Journal
EUROPHYSICS LETTERS
Volume 57, Issue 6, Pages 892-897Publisher
E D P SCIENCES
DOI: 10.1209/epl/i2002-00594-y
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Broken time reversal symmetry (BTRS) in d-wave superconductors is studied and is shown to yield current-carrying surface states. The corresponding spontaneous magnetization Phi is temperature independent near the critical temperature T-c for weak BTRS, in accord with recent data. For strong BTRS and thin films we expect a temperature-dependent Phi with a paramagnetic anomaly near T-c. The Hall conductance is found to vanish at zero wave vector q and finite frequency omega, however at finite q, omega it has an unusual structure.
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