By the same authors

From the same journal

From the same journal

Effect of proximity-induced spin-orbit coupling in graphene mesoscopic billiards

Research output: Contribution to journalLetterpeer-review

Full text download(s)

Published copy (DOI)

Author(s)

Department/unit(s)

Publication details

JournalPhysical Review B
DateAccepted/In press - 11 Feb 2021
DateE-pub ahead of print (current) - 24 Feb 2021
Volume103
Early online date24/02/21
Original languageEnglish

Abstract

van der Waals heterostructures based on two-dimensional materials have recently become a very active topic of research in spintronics, both aiming at a fundamental description of spin dephasing processes in nanostructures and as a potential element in spin-based information processing schemes. Here, we theoretically investigate the magnetoconductance of mesoscopic devices built from graphene proximity-coupled to a high spin-orbit coupling material. Through numerically exact tight-binding simulations, we show that the interfacial breaking of inversion symmetry generates robust weak antilocalization even when the z → −z symmetric spin-orbit coupling in the quantum dot dominates over the Bychkov-Rashba interaction. Our findings are interpreted in the light of random matrix theory, which links the observed behavior of quantum interference corrections to a transition from a circular-orthogonal to circular-symplectic ensemble.

Bibliographical note

©2021 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

    Research areas

  • graphene, quantum transport, spin orbit coupling, mesoscopic devices, universal conductance fluctuations, van der Waals heterostructures

Projects

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations