Controlling the current flux in magnetic-barrier induced graphene waveguide

Cesar E.P. Villegas, Marcos R.S. Tavares

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We theoretically propose a simple model to control the charge-density flux in graphene waveguides produced by either magnetic or electrostatic barriers. We carefully study the lowest energy guided mode and find unexpected extended states for small reflected angles contributing to flux that might be related to the superposition of surface and bound states. We also show possible manipulation of the charge carrier density, and so of the current flux, by simply changing the magnetization intensity or the waveguide width. Our results indicate how to reassess previous current flux by changing the magnetization parameter only.

Original languageEnglish
Article number163104
JournalApplied Physics Letters
Volume101
Issue number16
DOIs
StatePublished - 15 Oct 2012

Bibliographical note

Funding Information:
This work was supported by FAPESP, Brazil.

Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.

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