Year: 2008
Type: article
Abstract: Brillouin zones of graphene systems possess Dirac points, where band degeneracies occur. We study the variety of (and large magnitude of) phases that the electronic states can acquire when a uniform time-dependent electric field carries the electrons around one or more Dirac points in a nonconcentric fashion. An experimentally accessible determination of excess Berry phases is proposed involving the Zitterbewegung of electronic current near an orthogonality point in adiabatic motion.
Source: Physical Review B
Authors: R. Englman, T. Vértesi
Institutions: Soreq Nuclear Research Center, Hungarian Academy of Sciences
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funder: Magyar Tudományos Akadémia
OpenAlex ID: W2066979188