Topological phase stability and transformation of bismuthene Xiaoxiong Wang, Caizhi Xu, Huanzhi Hu, Peng Wang, Guang Bian, Weishi Tan, S. A. Brown and T.-C. Chiang EPL, 119 2 (2017) 27002 Published online: 29 September 2017 DOI: 10.1209/0295-5075/119/27002