Different topological insulating behavior in $\ensuremath{\beta}$-GaS and GaS-II under uniaxial tension

Different topological insulating behavior in $β$ -GaS and GaS-II under uniaxial tension

Xiaochun Huang, Xinyu Zhang, Yong Liu, Yidong Wu, Baisheng Sa, Mingzhen Ma, Zhimei Sun, and Riping Liu

Phys. Rev. B 88, 235301 – Published 2 December 2013

Abstract

The topological insulating behavior of β-GaS and GaS-II is investigated under uniaxial tensile strains, based on ab initio calculations with the Tran–Blaha modified Becke–Johnson potential. We found that the strain-induced topological phase transition only occurs in GaS-II, notwithstanding the same space group. The distinct topological insulating behavior of the two isomers are demonstrated to originate from the variation of the $Γ_{3}^{+} - Γ_{2}^{-}$ band gap, which is a direct consequence of the uniaxial-stretching-strengthened interlayer $s$ - $s$ interactions. The present finding provides a new perspective in exploring the topological behavior in materials with similar compositions and space group.

Received 6 July 2013

DOI:https://doi.org/10.1103/PhysRevB.88.235301

Authors & Affiliations

Xiaochun Huang¹, Xinyu Zhang^1,*, Yong Liu¹, Yidong Wu¹, Baisheng Sa², Mingzhen Ma¹, Zhimei Sun^2,3, and Riping Liu^1,*

¹State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
²Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China
³School of Materials Science and Engineering, Beihang University, Beijing 100191, China

^*Corresponding authors: xyzhang@ysu.edu.cn; riping@ysu.edu.cn

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 88, Iss. 23 — 15 December 2013

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review B

covering condensed matter and materials physics

Different topological insulating behavior in $β$ -GaS and GaS-II under uniaxial tension

Xiaochun Huang, Xinyu Zhang, Yong Liu, Yidong Wu, Baisheng Sa, Mingzhen Ma, Zhimei Sun, and Riping Liu

Phys. Rev. B 88, 235301 – Published 2 December 2013

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review B

covering condensed matter and materials physics

Different topological insulating behavior in β-GaS and GaS-II under uniaxial tension

Xiaochun Huang, Xinyu Zhang, Yong Liu, Yidong Wu, Baisheng Sa, Mingzhen Ma, Zhimei Sun, and Riping Liu

Phys. Rev. B 88, 235301 – Published 2 December 2013

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Different topological insulating behavior in $β$ -GaS and GaS-II under uniaxial tension