Quasiparticle band structure study of ternary mixed chalcogenide Bi2Te2S as topological insulator

• Main Authors: Alhassan, Shuaibu, Rahman, Md. Mahmudur, Zainuddin, Hishamuddin, Talib, Zainal Abidin, Muhida, Riza, Setiyanto , Henry
• Format: Article
• Published: National Institute of Research and Development of Materials Physics 2015
• Online Access: http://psasir.upm.edu.my/id/eprint/35141/; http://www.chalcogen.ro/letters.html
• Institution: Universiti Putra Malaysia

In this paper, ternary mixed chalcogenide Bi2Te2S has been investigated using first principle within the density functional theory (DFT) calculation as well as many body perturbation theory within the GW quasiparticle approximations. For the DFT calculation, we have used generalize gradient approxim...