Sorting the modes contributing to guidance in strain-induced graphene waveguides

Cesar E.P. Villegas, Marcos R.S. Tavares, G. Q. Hai, F. M. Peeters

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We propose a simple way of probing the number of modes contributing to the channeling in graphene waveguides which are formed by a gauge potential produced by mechanical strain. The energy mode structure for both homogeneous and non-homogeneous strain regimes is carefully studied using the continuum description of the Dirac equation. We found that high strain values privilege negative (instead of positive) group velocities throughout the guidance, sorting the types of modes flowing through it. We also show how the effect of a substrate-induced gap competes against the strain.

Original languageEnglish
Article number023015
JournalNew Journal of Physics
Volume15
DOIs
StatePublished - Feb 2013

Bibliographical note

Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.

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