Quantum transport in disordered normal metal/unconventional superconductor junctions

We calculate tunnel conductance for disordered normal metal/unconventional superconductor junctions where superconducting order parameter has broken time reversal symmetry (BTRS), i.e., dx2-y2+is. It is shown that reflectionless tunneling phenomena appears since zero-energy resonant states caused by the internal phase of dx2-y2-pair potential is broken by BTRS states. It is also shown that splitting of zero bias conductance peak due to BTRS in conductance spectra remains whereas the height of the peak is suppressed by the randomness