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Strain-induced asymmetric modulation of band gap in narrow armchair-edge graphene nanoribbon

Department of Physics and Electronic Engineering, Guangxi Normal University of Nationalities, Chongzuo 532200, China

Laboratory of Thin Film Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

E-mail Address: eastnobil@qq.com

Corresponding author.

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Fei-Peng Zhang

Institute of Physics, Henan University of Urban Construction, Henan 467036, China

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Zhi-Nian Jiang

Department of Physics and Electronic Engineering, Guangxi Normal University of Nationalities, Chongzuo 532200, China

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Jin-Yun Peng

Department of Physics and Electronic Engineering, Guangxi Normal University of Nationalities, Chongzuo 532200, China

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, and

Ru-Zhi Wang

Laboratory of Thin Film Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

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https://doi.org/10.1142/S0217984915502243Cited by:2 (Source: Crossref)

Abstract

We investigate the band structure of narrow armchair-edge graphene nanoribbons (AGNRs) under tensile strain by means of an extension of the Extended Hückel method. The strain-induced band gap modulation presents asymmetric behavior. The asymmetric modulation of band gap is derived from the different changes of conduction and valence bands near Fermi level under tensile strain. Further analysis suggests that the asymmetric variation of band structure near Fermi level only appear in narrow armchair-edge graphene nanoribbons.

Keywords:

PACS: 73.40.-c, 72.10.-d, 71.15.Mb, 73.63.-b, 85.65.+h, 81.08.Uw, 73.50.Fq

References

1. K. S. Novoselov, A. K. Geim, S. V. Morozov, D. Jiang, Y. Zhang, S. V. Dubonos, I. V. Grigorieva and A. A. Firsov, Science 306 (2004) 666. Crossref, Web of Science, ADS, Google Scholar
2. N. Tombros, C. Jozsa, M. Popinciuc, H. T. Jonkman and B. J. van Wees, Nature 448 (2007) 571. Crossref, Web of Science, ADS, Google Scholar
3. K. Ziegler, Phys. Rev. Lett. 97 (2006) 266802. Crossref, Web of Science, ADS, Google Scholar
4. M. I. Katsnelson, K. S. Novoselov and A. K. Geim, Nat. Phys. 2 (2006) 620. Crossref, Web of Science, ADS, Google Scholar
5. C. Berger, Z. M. Song, X. B. Li, X. S. Wu, N. Brown, C. Naud, D. Mayou, T. B. Li, J. Hass, A. N. Marchenkov, E. H. Conrad, P. N. First and W. A. de Heer, Science 312 (2006) 1191. Crossref, Web of Science, ADS, Google Scholar
6. Y. B. Zhang, Y. W. Tan, H. L. Stormer and P. Kim, Nature 438 (2005) 201. Crossref, Web of Science, ADS, Google Scholar
7. H. Fang, R.-Z. Wang, S.-Y. Chen, M. Yan, X.-M. Song and B. Wang, Appl. Phys. Lett. 98 (2011) 082108. Crossref, Web of Science, Google Scholar
8. O. Roslyak, A. Iurov, G. Gumbs and D. H. Huang, J. Phys.: Condens. Matter 22 (2010) 6. Crossref, Web of Science, Google Scholar
9. H. X. Zheng, Z. F. Wang, T. Luo, Q. W. Shi and J. Chen, Phys. Rev. B 75 (2007) 6. Google Scholar
10. C. P. Chang, B. R. Wu, R. B. Chen and M. F. Lin, J. Appl. Phys. 101 (2007) 6. Google Scholar
11. Z. Y. Li, H. Y. Qian, J. Wu, B. L. Gu and W. H. Duan, Phys. Rev. Lett. 100 (2008) 4. Google Scholar
12. G. Kresse and J. Furthmuller, Comput. Mater. Sci. 6 (1996) 15. Crossref, Web of Science, Google Scholar
13. G. Kresse and J. Furthmuller, Phys. Rev. B 54 (1996) 11169. Crossref, Web of Science, ADS, Google Scholar
14. G. Kresse and J. Hafner, Phys. Rev. B 48 (1993) 13115. Crossref, Web of Science, ADS, Google Scholar
15. J. P. Perdew and Y. Wang, Phys. Rev. B 45 (1992) 13244. Crossref, Web of Science, ADS, Google Scholar
16. G. Kresse and D. Joubert, Phys. Rev. B 59 (1999) 1758. Crossref, Web of Science, ADS, Google Scholar
17. P. E. Blochl, Phys. Rev. B 50 (1994) 17953. Crossref, Web of Science, ADS, Google Scholar
18. H. J. Monkhorst and J. D. Pack, Phys. Rev. B 13 (1976) 5188. Crossref, Web of Science, ADS, Google Scholar
19. K. Stokbro, D. E. Petersen, S. Smidstrup, A. Blom, M. Ipsen and K. Kaasbjerg, Phys. Rev. B 82 (2010) 075420. Crossref, Web of Science, ADS, Google Scholar
20. K. Nakada, M. Fujita, G. Dresselhaus and M. S. Dresselhaus, Phys. Rev. B 54 (1996) 17954. Crossref, Web of Science, ADS, Google Scholar
21. M. Topsakal, V. M. K. Bagci and S. Ciraci, Phys. Rev. B 81 (2010) 205437. Crossref, Web of Science, ADS, Google Scholar
22. L. Sun, Q. X. Li, H. Ren, H. B. Su, Q. W. Shi and J. L. Yang, J. Chem. Phys. 129 (2008) 6. Google Scholar
23. L. Sun, Q. X. Li, H. Ren, H. B. Su, Q. W. Shi and J. L. Yang, J. Chem. Phys. 129 (2008) 074704. Crossref, Web of Science, Google Scholar
24. M. Z. Hossain, Appl. Phys. Lett. 96 (2010) 143118. Crossref, Web of Science, ADS, Google Scholar
25. W. J. Yu and X. Duan, Sci. Rep. 3 (2013) 1248. Crossref, Web of Science, ADS, Google Scholar