TITLE

Quantum pumping with adiabatically modulated barriers in graphene

AUTHOR(S)
Rui Zhu; Huimin Chen
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p122111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We study the adiabatic quantum pumping characteristics in graphene modulated by two oscillating gate potentials out of phase. The angular and energy dependence of the pumped current (PC) is presented. The direction of the PC can be reversed when a high potential barrier demonstrates stronger transparency than a low one, which results from the Klein paradox. The underlying physics of the pumping process is illuminated.
ACCESSION #
44374719

 

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