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Chin. Phys. B, 2019, Vol. 28(7): 077302    DOI: 10.1088/1674-1056/28/7/077302
Special Issue: SPECIAL TOPIC — Topological semimetals
SPECIAL TOPIC—Topological semimetals Prev   Next  

Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi2

Zhen Zhu(朱朕)1, Dong Yan(严冬)2, Xiao-Ang Nie(聂晓昂)1, Hao-Ke Xu(徐豪科)1, Xu Yang(杨旭)1, Dan-Dan Guan(管丹丹)1,3,4, Shiyong Wang(王世勇)1,3,4, Yao-Yi Li(李耀义)1,3,4, Canhua Liu(刘灿华)1,3,4, Jun-Wei Liu(刘军伟)5, Hui-Xia Luo(罗惠霞)2, Hao Zheng(郑浩)1,3,4, Jin-Feng Jia(贾金锋)1,3,4
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
Abstract  

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.

Keywords:  Weyl semimetal      topological insulator      scanning tunneling microscopy  
Received:  20 April 2019      Revised:  31 May 2019      Accepted manuscript online: 
PACS:  73.20.-r (Electron states at surfaces and interfaces)  
  75.30.Gw (Magnetic anisotropy)  
Fund: 

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), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB28000000).

Corresponding Authors:  Hao Zheng, Jin-Feng Jia     E-mail:  haozheng1@sjtu.edu.cn;jfjia@sjtu.edu.cn

Cite this article: 

Zhen Zhu(朱朕), Dong Yan(严冬), Xiao-Ang Nie(聂晓昂), Hao-Ke Xu(徐豪科), Xu Yang(杨旭), Dan-Dan Guan(管丹丹), Shiyong Wang(王世勇), Yao-Yi Li(李耀义), Canhua Liu(刘灿华), Jun-Wei Liu(刘军伟), Hui-Xia Luo(罗惠霞), Hao Zheng(郑浩), Jin-Feng Jia(贾金锋) Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi2 2019 Chin. Phys. B 28 077302

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