CUED Publications database

Single-particle probing of edge-state formation in a graphene nanoribbon

Chiu, KL and Connolly, MR and Cresti, A and Chua, C and Chorley, SJ and Sfigakis, F and Milana, S and Ferrari, AC and Griffiths, JP and Jones, GAC and Smith, CG (2012) Single-particle probing of edge-state formation in a graphene nanoribbon. Physical Review B - Condensed Matter and Materials Physics, 85. ISSN 1098-0121

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Abstract

We investigate the effect of a perpendicular magnetic field on the single-particle charging spectrum of a graphene quantum dot embedded inline with a nanoribbon. We observe uniform shifts in the single-particle spectrum which coincide with peaks in the magnetoconductance, implicating Landau level condensation and edge state formation as the mechanism underlying magnetic field-enhanced transmission through graphene nanostructures. The experimentally determined ratio of bulk to edge states is supported by single-particle band-structure simulations, while a fourfold beating of the Coulomb blockade transmission amplitude points to many-body interaction effects during Landau level condensation of the ν=0 state. © 2012 American Physical Society.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:29
Last Modified: 08 Dec 2014 02:40
DOI: 10.1103/PhysRevB.85.205452