Strain effect on graphene nanoribbon carrier statistic in the presence of non-parabolic band structure

doi:10.1088/1674-1056/25/9/096802

Abstract The effect of tensile uniaxial strain on the non-parabolic electronic band structure of armchair graphene nanoribbon (AGNR) is investigated. In addition, the density of states and the carrier statistic based on the tight-binding Hamiltonian are modeled analytically. It is found that the property of AGNR in the non-parabolic band region is varied by the strain. The tunable energy band gap in AGNR upon strain at the minimum energy is described for each of n-AGNR families in the non-parabolic approximation. The behavior of AGNR in the presence of strain is attributed to the breakable AGNR electronic band structure, which varies the physical properties from its normality. The linear relation between the energy gap and the electrical properties is featured to further explain the characteristic of the deformed AGNR upon strain.

Keywords: strain graphene nanoribbon uniaxial strain current-voltage characteristic

Received: 14 December 2015
Revised: 15 April 2016
Accepted manuscript online:

PACS:	68.65.Pq	(Graphene films)
	61.46.Np	(Structure of nanotubes (hollow nanowires))
	61.48.-c	(Structure of fullerenes and related hollow and planar molecular structures)
	61.48.De	(Structure of carbon nanotubes, boron nanotubes, and other related systems)

Fund: Project supported by the Ministry of Higher Education (MOHE), Malaysia under the Fundamental Research Grant Scheme (FRGS) (Grant No. Q.J130000.7823.4F477). We also thank the Research Management Center (RMC) of Universiti Teknologi Malaysia (UTM) for providing an excellent research environment.

Corresponding Authors: Razali Ismail
E-mail: razali@fke.utm.my

Cite this article:

N A Izuani Che Rosid, M T Ahmadi, Razali Ismail Strain effect on graphene nanoribbon carrier statistic in the presence of non-parabolic band structure 2016 Chin. Phys. B 25 096802

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Strain effect on graphene nanoribbon carrier statistic in the presence of non-parabolic band structure

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