Berry phase in graphene: a semiclassical perspective
Mesoscale and Nanoscale Physics
2009-11-13 v2
Abstract
We derive a semiclassical expression for the Green's function in graphene, in which the presence of a semiclassical phase is made apparent. The relationship between this semiclassical phase and the adiabatic Berry phase, usually referred to in this context, is discussed. These phases coincide for the perfectly linear Dirac dispersion relation. They differ however when a gap is opened at the Dirac point. We furthermore present several applications of our semiclassical formalism. In particular we provide, for various configurations, a semiclassical derivation of the electron's Landau levels, illustrating the role of the semiclassical ``Berry-like'' phase
Keywords
Cite
@article{arxiv.0801.4727,
title = {Berry phase in graphene: a semiclassical perspective},
author = {Pierre Carmier and Ullmo Denis},
journal= {arXiv preprint arXiv:0801.4727},
year = {2009}
}