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Electronics 2013
Effects of Localized Trap-States and Corrugation on Charge Transport in Graphene NanoribbonsDOI: 10.3390/electronics2020178 Keywords: localized trap states, graphene nanoribbons, charge transport, surface acoustic wave 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.
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