Abstract
We investigate electronic transport in graphene nanojunctions and find that the transmission (or the conductance) can exhibit a nonmonotonic behavior with respect to variation in the strength of disorder, mimicking a stochastic resonance. The general setting for this remarkable phenomenon is where the graphene device possesses localized states in the absence of disorder, i.e., the localized edge states specific to graphene. A small amount of disorder can then break the localization and lead to an enhancement in the transmission. For strong disorder, Anderson localization [Phys. Rev. 109, 1492 (1958)] sets in, causing the transmission to decrease. The phenomenon is robust and can occur with or without magnetic field. (C) 2010 American Institute of Physics. [doi:10.1063/1.3460291]
Original language | English |
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Article number | 262114 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 96 |
Issue number | 26 |
DOIs | |
Publication status | Published - 28 Jun 2010 |