LAUSR

We predict for perhaps the first time, the occurrence of odd frequency equal spin-triplet correlations at a normal metal-superconductor junction. This result is important because the existence of equal spin-triplet correlations is associated with the presence of dissipation-less pure spin current. Inserting a spin-flipper at the interface of a normal metal-superconductor junction excites equal spin-triplet correlations. We show the existence of odd frequency equal spin-triplet correlations. The existence of odd frequency equal spin-triplet correlation tallies well with the enhanced spin-polarized local density of states seen at the interface. We show results for zero as well as finite temperature.