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

Electronics

Oleksiy Roslyak¹  Upali Aparajita¹  Godfrey Gumbs¹ 

[1] Department of Physics and Astronomy, Hunter College, City University of New York 695 Park Avenue, New York, NY 10065, USA; E-Mails:

关键词: localized trap states;    graphene nanoribbons;    charge transport;    surface acoustic wave;   

DOI  :  10.3390/electronics2020178

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.