Abstract
We consider different effects that arise when time-reversal symmetry breaking superconductors are subjected to an external magnetic field, thus rendering the superconductor to be in the mixed state. We focus in particular on two time-reversal symmetry breaking order parameters which are believed to be realized in actual materials: wave and or wave. The first-order parameter is relevant for , while the latter order parameters have been suggested to exist near surfaces in some of the high- cuprates. We investigate the interplay between surface states and vortex states in the presence of an external magnetic field and their influence on both the tunneling conductance and the local density of states. Our findings may be helpful to experimentally identify the symmetry of unconventional time-reversal symmetry breaking superconducting states.
1 More- Received 1 November 2008
DOI:https://doi.org/10.1103/PhysRevB.79.054508
©2009 American Physical Society