Title :
Quantum phase-space approach to the transport simulation in graphene devices
Author :
Morandi, Omar ; Schürrer, Ferdinand
Author_Institution :
Inst. of Theor. & Comput. Phys., Tech. Univ. Graz, Graz, Austria
Abstract :
Graphene is a novel material constituted by a two-dimensional carbon lattice. The electron dynamics in graphene is governed by the Dirac equation. The Wigner-Weyl formalism is used to describe the transport of electrons in graphene including quantum effects. A diagonalization procedure regarding the pseudo-spin degree of freedom is proposed. Our approach highlights the effect of Klein tunneling and we study the correction of the total current in intrinsic graphene induced by this phenomena. The connection of our formalism with the Berry phase approach is also investigated.
Keywords :
Berry phase; Dirac equation; graphene; transport processes; tunnelling; Berry phase; C; Dirac equation; Klein tunneling; diagonalization procedure; electron dynamics; graphene device; pseudospin degree of freedom; quantum effects; quantum phase space approach; transport simulation; two dimensional carbon lattice; Berry phase; Carbon; Distribution functions; Electric potential; Equations; Scattering; Tunneling;
Conference_Titel :
Computational Electronics (IWCE), 2010 14th International Workshop on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-9383-8
DOI :
10.1109/IWCE.2010.5677979
