Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi2  

作　　者：Zhen Zhu Dong Yan Xiao-Ang Nie Hao-Ke Xu Xu Yang Dan-Dan Guan Shiyong Wang Yao-Yi Li Canhua Liu Jun-Wei Liu Hui-Xia Luo Hao Zheng Jin-Feng Jia 朱朕;严冬;聂晓昂;徐豪科;杨旭;管丹丹;王世勇;李耀义;刘灿华;刘军伟;罗惠霞;郑浩;贾金锋(Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240,China;Department of Physics, National Sun Yat-Sen University. Guangzhou 510275, China;Collaborative Innovation Center of Advanced Microstructures. Nanjing University, Nanjing 210093, China;Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240,China;Hong Kong University of Science and Technology, Hong Kong, China)

机构地区：[1]Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240,China [2]Department of Physics, National Sun Yat-Sen University. Guangzhou 510275, China [3]Collaborative Innovation Center of Advanced Microstructures. Nanjing University, Nanjing 210093, China [4]Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240,China [5]Hong Kong University of Science and Technology, Hong Kong, China

出　　处：《Chinese Physics B》2019年第7期87-90,共4页中国物理B（英文版）

基　　金：Project supported by the “Shuguang Program” from Shanghai Education Development Foundation and Shanghai Municipal Education Commission,Ministry of Science and Technology of China(Grant Nos.2016YFA0301003 and 2016YFA0300403);the National Natural Science Foundation of China(Grant Nos.11521404,11634009,11874256,11574202,11874258,11790313,11674226,U1632102,11674222,and 11861161003);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB28000000)

摘　　要：YbMnBi2 is a recently discovered time-reversal-symmetry breaking type-Ⅱ Weyl semimetal.However, as a representation of the new category of topological matters, the scanning tunneling microcopy(STM) results on such important material are still absent.Here, we report the STM investigations on the morphology of vacuum cleaved single crystalline YbMnBi2 samples.A hill and valley type of topography is observed on the YbMnBi2 surface, which is consistent with the non-layer nature of its crystal structure.Analysis of STM images yields the information of the index of the vicinal surface.Our results here lay a playground of future atomic scale research on YbMnBi2.YbMnBi2 is a recently discovered time-reversal-symmetry breaking type-Ⅱ Weyl semimetal.However, as a representation of the new category of topological matters, the scanning tunneling microcopy（STM） results on such important material are still absent.Here, we report the STM investigations on the morphology of vacuum cleaved single crystalline YbMnBi2 samples.A hill and valley type of topography is observed on the YbMnBi2 surface, which is consistent with the non-layer nature of its crystal structure.Analysis of STM images yields the information of the index of the vicinal surface.Our results here lay a playground of future atomic scale research on YbMnBi2.

关 键 词：WEYL SEMIMETAL topological INSULATOR SCANNING TUNNELING microscopy 

分 类 号：O4[理学—物理]