褶皱石墨带的电子输运性质

doi:10.3866/PKU.WHXB20110819

Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (09): 2107-2110.doi: 10.3866/PKU.WHXB20110819

• THEORETICAL AND COMPUTATIONAL CHEMISTRY • Previous Articles Next Articles

Transport Properties of Corrugated Graphene Nanoribbons

XU Ning¹, ZHANG Chao², KONG Fan-Jie¹, SHI You-Jin¹

1. Department of Physics, Yancheng Institute of Technology, Yancheng 224051, Jiangsu Province, P. R. China;
2. Engineering Department of Airport, Xuzhou Air College, Xuzhou 221000, Jiangsu Province, P. R. China

Received:2011-04-11 Revised:2011-06-03 Published:2011-08-26
Contact: XU Ning E-mail:xuning79530@126.com
Supported by:
This project was supported by the National Natural Science Foundation of China (10874052), Foundation for the Author of National Excellent Doctoral Dissertation of China (200726), Natural Science Foundation of Jiangsu Province, China (BK2010499), Natural Science Fund for Colleges and Universities in Jiangsu Province, China (11KJB140012), and General Program of Yancheng Institute of Technology, China (XKY2011014).

Abstract

Abstract: We studied the transport properties of corrugated graphene nanoribbons by the recursive Green function method. We show that in the presence of ripples the minigaps with zero conductance and minibands with conductance fluctuations form in the zigzag ribbons among the first Van Hove singularity. For the metal armchair ribbons a conductance gap is present in the vicinity of the Fermi energy, which corresponds to a metal-semiconductor transition. With the fluctuation of ripples intensifying the overall averaged conductance decreases for both the zigzag and armchair ribbons and it tends to be zero. These results are useful for a better understanding of the electronic transport properties of realistic graphene nanoribbons and will be helpful for the design of nanodevices based on graphene.

Key words: Tight-binding model, Green function, Graphene-nanoribbon, Conductance

XU Ning, ZHANG Chao, KONG Fan-Jie, SHI You-Jin. Transport Properties of Corrugated Graphene Nanoribbons[J]. Acta Phys. -Chim. Sin. 2011, 27(09), 2107-2110. doi: 10.3866/PKU.WHXB20110819

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Transport Properties of Corrugated Graphene Nanoribbons

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