Temperature-driven and chemical-potential-driven adiabatic pumping in coherent electron transport

Research paper by M. Hasegawa, T. Kato

Indexed on: 16 Jun '16Published on: 16 Jun '16Published in: Physics - Mesoscopic Systems and Quantum Hall Effect

Abstract

In this study, we investigate adiabatic pumping induced by the modulation of thermodynamic variables of reservoirs, i.e., temperatures and electrochemical potentials in coherent mesoscopic devices. A simple setup that adopts an impurity Anderson model was used to examine charge pumping under the periodic modulation of the thermodynamic parameters of reservoirs. Consequently, the possibility of charge pumping in the presence of Coulomb interaction is confirmed. Finally, a formula describing charge pumping under a weak Coulomb interaction is derived and the properties of temperature-driven pumping and electrochemical-potential-driven pumping are compared.