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

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

中国物理B ›› 2016, Vol. 25 ›› Issue (9): 96802-096802.doi: 10.1088/1674-1056/25/9/096802

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

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

N A Izuani Che Rosid, M T Ahmadi, Razali Ismail

1. Department of Electronics and Computer Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia;
2. Nanoelectronic Group, Physics Department, Faculty of Science, Urmia University, Urmia 57147, Iran

收稿日期:2015-12-14 修回日期:2016-04-15 出版日期:2016-09-05 发布日期:2016-09-05
通讯作者: Razali Ismail E-mail:razali@fke.utm.my
基金资助:
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.

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

N A Izuani Che Rosid¹, M T Ahmadi^1,2, Razali Ismail¹

1. Department of Electronics and Computer Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia;
2. Nanoelectronic Group, Physics Department, Faculty of Science, Urmia University, Urmia 57147, Iran

Received:2015-12-14 Revised:2016-04-15 Online:2016-09-05 Published:2016-09-05
Contact: Razali Ismail E-mail:razali@fke.utm.my
Supported by:
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.

摘要/Abstract

摘要： 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.

关键词: strain graphene nanoribbon, uniaxial strain, current-voltage characteristic

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.

Key words: strain graphene nanoribbon, uniaxial strain, current-voltage characteristic

中图分类号: (Graphene films)

68.65.Pq

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)

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[J]. 中国物理B, 2016, 25(9): 96802-096802.

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[J]. Chin. Phys. B, 2016, 25(9): 96802-096802.

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

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

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