publication . Preprint . 2015

Tuning the electronic structures of silicene and germanene by biaxial strain and electric field

Yan, Jia-An; Gao, Shang-Peng; Stein, Ryan; Coard, Gregory;
Open Access English
  • Published: 05 Apr 2015
Abstract
We present a first-principles study of effects of small biaxial strain ($|\varepsilon|\le 5\%$) and perpendicular electric field (E-field) on the electronic and phonon properties of low-buckled silicene and germanene. With an increase of the biaxial strain, the conduction bands at the high symmetric $\Gamma$ and $M$ points of the first Brillouin zone shift significantly towards the Fermi level in both silicene and germanene. In contrast, the E-field changes the band dispersions near the $\Gamma$ and open a small band gap at the K point in silicene. We found that the field-induced gap opening in silicene could be enhanced by a compressive strain while mitigated b...
Subjects
free text keywords: Condensed Matter - Materials Science
Related Organizations
Download from
48 references, page 1 of 4

1 K. S. Novoselov, D. Jiang, F. Schedin, T. J. Booth, V. V. Khotkevich, S. V. Morozov, and A. K. Geim, Proc. Natl Acad. Sci. USA 102, 10451 (2005). [OpenAIRE]

2 K. Takeda and K. Shiraishi, Phys. Rev. B 50, 14916-14922 (1994).

3 S. Cahangirov, M. Topsakal, E. Aktu¨rk, H. Sahin, and S. Ciraci, Phys. Rev. Lett. 102, 236804 (2009).

4 G. G. Guzma´n-Verri, L. C. Lew Yan Voon, Phys. Rev. B 76, 075131 (2007).

5 M. Ezawa, Phys. Rev. Lett. 109, 055502 (2012).

6 A. Kara, H. Enriquezc, A. P. Seitsonen, L. C. Lew Yan Voon, S. Vizzini, B. Aufray, H. Oughaddou, Surf. Sci. Rep. 67, 1 (2012).

7 Z. Ni, Q. Liu, K. Tang, J. Zheng, J. Zhou, R. Qin, Z. Gao, D. Yu, and J. Lu, Nano Lett. 12, 113-118 (2012).

8 N. D. Drummond, V. Zo´lyomi, and V. I. Fal'ko, Phys. Rev. B 85, 075423 (2012).

9 M. Ezawa, New J. Phys. 14, 033003 (2012).

10 P. Vogt, P. De Padova, C. Quaresima, J. Avila, E. Frantzeskakis, M. C. Asensio, A. Resta, B. Ealet, and G. Le Lay, Phys. Rev. Lett. 108, 155501 (2012).

11 A. Fleurence, R. Friedlein, T. Ozaki, H. Kawai, Y. Wang, and Y. Yamada-Takamura, Phys. Rev. Lett. 108, 245501 (2012).

12 L. Chen, C.-C. Liu, B. Feng, X. He, P. Cheng, Z. Ding, S. Meng, Y. Yao, K. Wu, Phys. Rev. Lett. 109, 056804 (2012).

13 B. Feng, Z. Ding, S. Meng, Y. Yao, X. He, P. Cheng, L. Chen, and K. Wu, Nano Lett., 12, 3507-3511 (2012).

14 H. Jamgotchian, Y. Colignon, N. Hamzaoui, B. Ealet, J. Y. Hoarau, B. Aufray, and J. P. Bib´erian, J. Phys. Condens. Matter 24, 172001 (2012).

15 C.-L. Lin, R. Arafune, K. Kawahara, N. Tsukahara, E. Minamitani, Y. Kim, N. Takagi, and M. Kawai, App. Phys. Exp. 5, 045802 (2012).

48 references, page 1 of 4
Powered by OpenAIRE Research Graph
Any information missing or wrong?Report an Issue