Enhanced Conductance Fluctuation by Quantum Confinement Effect in Graphene Nanoribbons
Mesoscale and Nanoscale Physics
2010-10-12 v1 Materials Science
Abstract
Conductance fluctuation is usually unavoidable in graphene nanoribbons (GNR) due to the presence of disorder along its edges. By measuring the low-frequency noise in GNR devices, we find that the conductance fluctuation is strongly correlated with the density-of-states of GNR. In single-layer GNR, the gate-dependence of noise shows peaks whose positions quantitatively match the subband positions in the band structures of GNR. This correlation provides a robust mechanism to electrically probe the band structure of GNR, especially when the subband structures are smeared out in conductance measurement.
Keywords
Cite
@article{arxiv.1010.1796,
title = {Enhanced Conductance Fluctuation by Quantum Confinement Effect in Graphene Nanoribbons},
author = {Guangyu Xu and Carlos M. Torres and Emil B. Song and Jianshi Tang and Jingwei Bai and Xiangfeng Duan and Yuegang Zhang and Kang L. Wang},
journal= {arXiv preprint arXiv:1010.1796},
year = {2010}
}
Comments
to appear in Nano Letters