Ferreira, Aires orcid.org/0000-0001-6017-8669 and Mucciolo, Eduardo (2015) Critical Delocalization of Chiral Zero Energy Modes in Graphene. Physical Review Letters. 106601. ISSN 1079-7114
Abstract
Graphene subjected to chiral-symmetric disorder is believed to host zero energy modes (ZEMs) resilient to localization, as suggested by the renormalization group analysis of the underlying nonlinear sigma model. We report accurate quantum transport calculations in honeycomb lattices with in excess of $10^9$ sites and fine meV resolutions. The Kubo dc conductivity of ZEMs induced by vacancy defects (chiral BDI class) is found to match $4e^2/(\pi h)$ within 1% accuracy, over a parametrically wide window of energy level broadenings and vacancy concentrations. Our results disclose an unprecedentedly robust metallic regime in graphene, providing strong evidence that the early field-theoretical picture for the BDI class is valid well beyond its controlled weak-coupling regime.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2015 American Physical Society. |
Keywords: | graphene,Anderson localization,chiral orthogonal class,electronic transport,quantum critical points,zero energy modes,quantum transport |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 17 Nov 2017 09:00 |
Last Modified: | 26 Nov 2024 00:30 |
Published Version: | https://doi.org/10.1103/PhysRevLett.115.106601 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.115.106601 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:124218 |