Work

Space Dependent Fermi Velocity in Strained Graphene

Year: 2012

Type: article

Abstract: We investigate some apparent discrepancies between two different models for curved graphene: the one based on tight-binding and elasticity theory, and the covariant approach based on quantum field theory in curved space. We demonstrate that strained or corrugated samples will have a space-dependent Fermi velocity in either approach that can affect the interpretation of local probe experiments in graphene. We also generalize the tight-binding approach to general inhomogeneous strain and find a gauge field proportional to the derivative of the strain tensor that has the same form as the one obtained in the covariant approach.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.108.227205

Authors: Fernando de Juan, Mauricio Sturla, María A. H. Vozmediano

Institutions: Indiana University Bloomington, Indiana University, Consejo Superior de Investigaciones Científicas, Instituto de Ciencia de Materiales de Madrid

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

OpenAlex ID: W2089523877

FWCI: 7.967

Cites: 41

Cited by: 230

Related to: 10