Volume 102, Number 2, April 2013
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||03 May 2013|
Klein paradox for a pn junction in multilayer graphene
Department of Physics, University of Antwerp - Groenenborgerlaan 171, B-2020 Antwerp, Belgium, EU
Received: 8 December 2012
Accepted: 1 April 2013
Charge carriers in single and multilayered graphene systems behave as chiral particles due to the particular lattice symmetry of the crystal. We show that the interplay between the meta-material properties of graphene multilayers and the pseudospinorial properties of the charge carriers result in the occurrence of Klein and anti-Klein tunneling for rhombohedral stacked multilayers. We derive an algebraic formula predicting the angles at which these phenomena occur and support this with numerical calculations for systems up to four layers. We present a decomposition of an arbitrarily stacked multilayer into pseudospin doublets that have the same properties as rhombohedral systems with a lower number of layers.
PACS: 72.80.Vp – Electronic transport in graphene / 73.21.Ac – Multilayers / 73.22.Pr – Electronic structure of graphene
© EPLA, 2013
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