TITLE:
Symmetry Classification of Energy Bands in Graphene and Silicene
AUTHORS:
Eugene Kogan
KEYWORDS:
Graphene; Silicene; Group Theory; Dirac Points
JOURNAL NAME:
Graphene,
Vol.2 No.2,
April
30,
2013
ABSTRACT: We present the results of the symmetry classification of the electron energy bands in graphene and silicene using group theory algebra and the tight-binding approximation. The analysis is performed both in the absence and in the presence of the spin-orbit coupling. We also discuss the bands merging in the Brillouin zone symmetry points and the conditions for the latter to become Dirac points.