Nonequilibrium transport via spin-induced subgap states in superconductor/quantum dot/normal metal cotunnel junctions
Nonequilibrium transport via spin-induced subgap states in superconductor/quantum dot/normal metal cotunnel junctions
We study low-temperature transport through a Coulomb blockaded quantum dot (QD) contacted by a normal (N), and a superconducting (S) electrode. Within an effective cotunneling model the conduction electron self energy is calculated to leading order in the cotunneling amplitudes and subsequently resummed to obtain the nonequilibrium T-matrix, from which …