Influence of vacuum degree on growth of Bi2Te3 single crystal
Tang Yan-Kun†, Zhao Wen-Juan, Zhu Hua-Qiang, Huang Yong-Chao, Cao Wei-Wei, Yang Qian, Yao Xiao-Yan, Zhai Ya, Dong Shuai
       
(a) SEM image of surface and internal morphology for the sample prepared at 1.0×10−2 Pa. (b) The enlarged view of flower-like cluster on the surface. (c) EDS analysis recorded on the flower-like clusters.