Pseudospin in optical and transport properties of graphene

Abstract

We show that the pseudospin being an additional degree of freedom for
carriers in graphene can be efficiently controlled by means of the
electron-electron interactions which, in turn, can be manipulated by changing
the substrate. In particular, an out-of-plane pseudospin component can occur
leading to a zero-field Hall current as well as to polarization-sensitive
interband optical absorption.