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

TL;DR

This paper investigates the current-voltage behavior of mesoscopic quantum dots connected to superconducting leads, incorporating interaction effects via a Poisson-non-equilibrium Green function approach.

Contribution

It introduces a coupled Poisson non-equilibrium Green function formalism to analyze charge transport in mesoscopic systems with superconducting contacts.

Findings

Characterizes I-V curves of quantum dots with superconducting leads.

Incorporates charging energy effects into non-equilibrium Green function calculations.

Provides a framework for understanding interaction effects in mesoscopic superconducting systems.

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.