From adiabatic to non-adiabatic pumping in graphene nanoribbons
Mesoscale and Nanoscale Physics
2012-03-20 v1
Abstract
Non-equilibrium two-parameter pumping transport through graphene ribbons, attached to reservoirs is described. A tight-binding model is solved using Keldysh formalism, and the crossover between adiabatic and non-adiabatic regimes is studied. Pumped dc currents through armchair ribbons show properties common in two-dimensional systems. The width-dependent dc current in zigzag ribbons, reveals that edge states akin to those in two-dimensional topological insulators, do not contribute to pumped transport in the adiabatic regime. The interplay between propagating and evanescent modes is discussed.
Keywords
Cite
@article{arxiv.1203.3952,
title = {From adiabatic to non-adiabatic pumping in graphene nanoribbons},
author = {Tejinder Kaur and Liliana Arrachea and Nancy Sandler},
journal= {arXiv preprint arXiv:1203.3952},
year = {2012}
}
Comments
4 pages, 4 figures