Gaps tunable by electrostatic gates in strained graphene

T. Low, F. Guinea, M. I. Katsnelson

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

Abstract

We show that when the pseudomagnetic fields created by long-wavelength deformations are appropriately coupled with a scalar electric potential, a significant energy gap can emerge due to the formation of a Haldane state. Ramifications of this physical effect are examined through the study of various strain geometries commonly seen in experiments, such as strain superlattices and wrinkled suspended graphene. Of particular technological importance, we consider setups where this gap can be tunable through electrostatic gates, allowing for the design of electronic devices not realizable with other materials.

Original languageEnglish (US)
Article number195436
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number19
DOIs
StatePublished - May 26 2011

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