The Aharonov-Bohm effect in graphene rings

TL;DR

This review explores how the Aharonov-Bohm effect manifests in graphene rings, emphasizing the influence of graphene's unique electronic properties like Klein tunneling and Andreev reflection on quantum interference phenomena.

Contribution

It provides a comprehensive overview of recent experimental and theoretical advances in understanding quantum interference in graphene rings, highlighting graphene-specific effects on the Aharonov-Bohm oscillations.

Findings

Identification of Klein tunneling signatures in conductance oscillations

Observation of specular Andreev reflection effects

Assessment of current experimental and theoretical progress

Abstract

This is a review of electronic quantum interference in mesoscopic ring structures based on graphene, with a focus on the interplay between the Aharonov-Bohm effect and the peculiar electronic and transport properties of this material. We first present an overview on recent developments of this topic, both from the experimental as well as the theoretical side. We then review our recent work on signatures of two prominent graphene-specific features in the Aharonov-Bohm conductance oscillations, namely Klein tunneling and specular Andreev reflection. We close with an assessment of experimental and theoretical development in the field and highlight open questions as well as potential directions of the developments in future work.