Coherent transport in a normal diffusive wire between two reservoirs

TL;DR

This paper analyzes electron transport in diffusive normal conductors with proximity-induced superconductivity, revealing complex temperature and energy dependencies, flux-periodic conductance oscillations, and reentrant behavior with temperature.

Contribution

It provides a detailed theoretical analysis of conductance and density of states in diffusive wires with superconducting proximity effects, including flux-dependent oscillations and temperature behavior.

Findings

Conductance oscillates with magnetic flux in a h/2e-periodic manner.

Oscillation amplitude exhibits reentrant behavior and decays as 1/T at high temperatures.

Rich temperature and energy dependence of conductance and density of states.

Abstract

We develop a detailed analysis of electron transport in normal diffusive con- ductors in the presence of proximity induced superconductivity. A rich structure of temperature and energy dependencies for the system condcutcance, density of states and related quantities was found and explained. If the nor- mal conductor forms a loop its conductance changes h/2e-periodically with the magnetic flux inside the loop. The amplitude of these conductance oscillations shows a reentrant behavior and decays as 1/T at high T