Spectroscopic Signatures of Massless Gap Opening in Graphene
Mesoscale and Nanoscale Physics
2008-10-03 v1 Materials Science
Abstract
Gap opening in graphene is usually discussed in terms of a semiconducting-like spectrum, where the appearance of a finite gap at the Dirac point is accompanied by a finite mass for the fermions. In this Letter we propose a gap scenario from graphene which preserves the massless characters of the carriers. This approach explains recent spectroscopic measurements carried out in epitaxially-grown graphene, ranging from photoemission to optical transmission.
Keywords
Cite
@article{arxiv.0804.2192,
title = {Spectroscopic Signatures of Massless Gap Opening in Graphene},
author = {L. Benfatto and E. Cappelluti},
journal= {arXiv preprint arXiv:0804.2192},
year = {2008}
}