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HL: Fachverband Halbleiterphysik

HL 49: Graphene

HL 49.1: Vortrag

Donnerstag, 29. März 2007, 17:30–17:45, H17

Fabry-Perot interference in graphene ribbons (SWITCHED WITH TT 27.3) — •Miriam del Valle¹, Carlos Tejedor², and Gianaurelio Cuniberti¹ — ¹Institut für Theoretische Physik, Universität Regensburg — ²Universidad Autónoma de Madrid, Spain

Graphene is in the focus of intense studies, as it represents an archetypal system for investigating low-dimensional quantum phenomena. Moreover, its topology results in a peculiar electronic structure with a massless dispersion near the Fermi level. Here we present a theoretical study on the Fabry-Perot interference patterns of graphene ribbons well contacted to external electrodes and capacitively coupled to a back gate. Our main focus comprises the effects of the orbital mixing between s and p bands and the role of defects.