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Open Access Nano Express

The effect of uniaxial strain on graphene nanoribbon carrier statistic

Zaharah Johari and Razali Ismail*

Author Affiliations

Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor 81310, Malaysia

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Nanoscale Research Letters 2013, 8:479  doi:10.1186/1556-276X-8-479

Published: 14 November 2013

Abstract

Armchair graphene nanoribbon (AGNR) for n=3m and n=3m+1 family carrier statistic under uniaxial strain is studied by means of an analytical model based on tight binding approximation. The uniaxial strain of AGNR carrier statistic models includes the density of state, carrier concentration, and carrier velocity. From the simulation, it is found that AGNR carrier concentration has not been influenced by the uniaxial strain at low normalized Fermi energy for n=3m and n=3m+1. In addition, the carrier velocity of AGNR is mostly affected by strain at high concentration of n≈3.0×107 and 1.0 × 107 m−1 for n=3m and n=3m+1, respectively. The result obtained gives physical insight into the understanding of uniaxial strain in AGNR.

Keywords:
GNR; Uniaxial strain; Carrier statistic