title: Anisotropy induced localization of pseudo-relativistic spin states in graphene double quantum wire structures.
abstract: We study the single-particle properties of Dirac Fermions confined to a double quantum wire system based on graphene. We map out the spatial regions where electrons in a given subband display the largest occupation probability induced by spatial anisotropic effects associated to the interaction strength between the graphene wires and the substrate. Here, the graphene-substrate interaction is considered as an ad hoc parameter which destroys the zero-gap observed in the relativistic Dirac cone characteristic of graphene electronic energy dispersions. Furthermore, the results indicate that the character of quasi-extended spin states, viewed by multisubband probability density function, is highly sensitive to spatial asymmetries and to the graphene-substrate interaction strength.
authors: Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, Brazil.
authors: Cesar E P
authors: CE
authors: Villegas
authors: Marcos R S
authors: MR
authors: Tavares
authors: G E
authors: GE
authors: Marques