Spontaneous magnetization and Hall effect in superconductors with broken time-reversal symmetry

Abstract

Broken time reversal symmetry (BTRS) in d wave superconductors is studied and is shown to yield current carrying surface states. The corresponding spontaneous magnetization is temperature independent near the critical temperature Tc for weak BTRS, in accord with recent data. For strong BTRS and thin films we expect a temperature dependent spontaneous magnetization with a paramagnetic anomaly near Tc. The Hall conductance is found to vanish at zero wavevector q and finite frequency w, however at finite q,w it has an unusual structure.

7 pages, 1 eps figure, Europhysics Letters (in press)

References in corpus (3)

• Spontaneous Hall effect in chiral p-wave superconductor
• Correlation of tunneling spectra with surface nano-morphology and doping in thin YBa2Cu3O7-delta films
• Thickness independence of field induced time reversal symmetry breaking in Y/sub1 Ba/sub2 Cu/sub3 O/sub7-delta thin films

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• Impurity Induced Polar Kerr Effect in A Chiral p-wave Superconductor
• Gauge-invariant electromagnetic response of a chiral px+ipy superconductor
• Superconductors with broken time-reversal symmetry: Spontaneous magnetization and quantum Hall effects
• Transverse voltage in zero external magnetic fields, its scaling and violation of the time reversal symmetry in MgB2
• Hall viscosity and conductivity of two-dimensional chiral superconductors
• Spontaneous Quantum Hall Effect in chiral d-density waves
• Intrinsic and extrinsic origins of the polar Kerr effect in a chiral p-wave superconductor
• Scaling of resistivities and guided vortex motion in MgB2 thin films
• Quantum Hall effects in layered disordered superconductors