Phase coherent transport in hybrid superconducting nanostructures

TL;DR

This paper reviews recent experimental and theoretical advances in phase-coherent transport in hybrid superconducting nanostructures, focusing on dc conduction, scattering theories, and phenomena like Andreev effects and proximity-induced conductance changes.

Contribution

It provides a comprehensive overview of phase-coherent transport mechanisms, comparing multiple scattering and quasi-classical theories, and discusses key experimental paradigms.

Findings

Comparison of scattering and quasi-classical methods

Discussion of zero-bias anomalies and proximity effects

Analysis of Andreev interferometers and conductance suppression

Abstract

This article is an overview of recent experimental and theoretical work on transport in phase-coherent hybrid nanostructures, with particular emphasis on dc electrical conduction. A summary of multiple scattering theory and the quasi-classical methods is presented and comparisons between the two are made. Several paradigms of phase-coherent transport are discussed, including zero-bias anomalies, reentrant and long range proximity effects, Andreev interferometers and superconductivity-induced conductance suppression.