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Electronics 2013, 2(2), 178-191; doi:10.3390/electronics2020178
Article

Effects of Localized Trap-States and Corrugation on Charge Transport in Graphene Nanoribbons

1,2
,
1
,
1,3
 and
4,*
1 Department of Physics and Astronomy, Hunter College, City University of New York 695 Park Avenue, New York, NY 10065, USA 2 Theoretical division of Los Alamos National Lab, New Mexico, NM 87504, USA 3 Donostia International Physics Center (DIPC), P de Manuel Lardizabal, 4, 20018 San Sebastian, Basque Country, Spain 4 Air Force Research Laboratory (ARFL/RVSS), Kirtland Air Force Base, NM 87117, USA
* Author to whom correspondence should be addressed.
Received: 2 April 2013 / Revised: 9 May 2013 / Accepted: 10 May 2013 / Published: 21 May 2013
(This article belongs to the Special Issue Carbon Nanoelectronics)
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Abstract

We investigate effects of the electron traps on adiabatic charge transport in graphene nanoribbons under a longitudinal surface acoustic wave (SAW) potential. Due to the weak SAW potential and strong transverse confinement of nanoribbons, minibands of sliding tunnel-coupled quantum dots are formed. Therefore, as the chemical potential passes through minigaps, quantized adiabatic charge transport is expected to occur. We analyze the condition for a closed minigap, thereby destroying the current quantization in a nanoribbon. We present numerical calculations showing the localized energy states within minigaps. Additionally, we compare the results with the minibands of corrugated nanoribbons.
Keywords: localized trap states; graphene nanoribbons; charge transport; surface acoustic wave localized trap states; graphene nanoribbons; charge transport; surface acoustic wave
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Roslyak, O.; Aparajita, U.; Gumbs, G.; Huang, D. Effects of Localized Trap-States and Corrugation on Charge Transport in Graphene Nanoribbons. Electronics 2013, 2, 178-191.

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