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Effects of Localized Trap-States and Corrugation on Charge Transport in Graphene Nanoribbons
Department of Physics and Astronomy, Hunter College, City University of New York 695 Park Avenue, New York, NY 10065, USA
Theoretical division of Los Alamos National Lab, New Mexico, NM 87504, USA
Donostia International Physics Center (DIPC), P de Manuel Lardizabal, 4, 20018 San Sebastian, Basque Country, Spain
Air Force Research Laboratory (ARFL/RVSS), Kirtland Air Force Base, NM 87117, USA
* Author to whom correspondence should be addressed.
Received: 2 April 2013; in revised form: 9 May 2013 / Accepted: 10 May 2013 / Published: 21 May 2013
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
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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.
Roslyak O, Aparajita U, Gumbs G, Huang D. Effects of Localized Trap-States and Corrugation on Charge Transport in Graphene Nanoribbons. Electronics. 2013; 2(2):178-191.
Roslyak, Oleksiy; Aparajita, Upali; Gumbs, Godfrey; Huang, Danhong. 2013. "Effects of Localized Trap-States and Corrugation on Charge Transport in Graphene Nanoribbons." Electronics 2, no. 2: 178-191.