Single charge-current in a normal mesoscopic region attached to superconductor leads via a coupled Poisson Non-equilibrium Green Function formalism

Abstract

We study the I-V characteristic of mesoscopic systems or Quantum dot attached of a pair of superconducting leads. Interaction effects in the quantum dot are considered through the charging energy of the quantum dot; the treatment of such effects are considered within a Poisson-non-equilibrium function scheme.