Theoretical prediction of topological insulators in thallium-based III-V-VI2 ternary chalcogenidesBinghai Yan, Chao-Xing Liu, Hai-Jun Zhang, Chi-Yung Yam, Xiao-Liang Qi, Thomas Frauenheim and Shou-Cheng ZhangEPL, 90 3 (2010) 37002DOI: https://doi.org/10.1209/0295-5075/90/37002