Field-induced Confined States in Graphene

TL;DR

This paper demonstrates a method to confine carriers in single-layer graphene using magnetic fields, leading to quantum dots and a tunable confinement-deconfinement transition, advancing graphene-based quantum device technology.

Contribution

It introduces a novel approach to achieve field-induced quantum confinement in graphene, enabling control over quantum states in a single material platform.

Findings

Field-induced quantum dots are realized in graphene.

Coulomb-blockade effects are observed under magnetic fields.

A transition between confinement and deconfinement is demonstrated.

Abstract

We report an approach to confine the carriers in single-layer graphene, which leads to quantum devices with field-induced quantum confinement. We demonstrated that the Coulomb-blockade effect evolves under a uniform magnetic field perpendicular to the graphene device. Our experimental results show that field-induced quantum dots are realized in graphene, and a quantum confinement-deconfinement transition is switched by the magnetic field.