Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi2

doi:10.1088/1674-1056/28/7/077302

中国物理B ›› 2019, Vol. 28 ›› Issue (7): 77302-077302.doi: 10.1088/1674-1056/28/7/077302

所属专题： SPECIAL TOPIC — Topological semimetals

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi₂

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

收稿日期:2019-04-20 修回日期:2019-05-31 出版日期:2019-07-05 发布日期:2019-07-05
通讯作者: Hao Zheng, Jin-Feng Jia E-mail:haozheng1@sjtu.edu.cn;jfjia@sjtu.edu.cn
基金资助:
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).

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

Received:2019-04-20 Revised:2019-05-31 Online:2019-07-05 Published:2019-07-05
Contact: Hao Zheng, Jin-Feng Jia E-mail:haozheng1@sjtu.edu.cn;jfjia@sjtu.edu.cn
Supported by:
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).

摘要/Abstract

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.

关键词: Weyl semimetal, topological insulator, scanning tunneling microscopy

Abstract:

Key words: Weyl semimetal, topological insulator, scanning tunneling microscopy

中图分类号: (Electron states at surfaces and interfaces)

73.20.-r

75.30.Gw (Magnetic anisotropy)

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. Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi₂[J]. 中国物理B, 2019, 28(7): 77302-077302.

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[J]. Chin. Phys. B, 2019, 28(7): 77302-077302.

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Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi₂

Scanning tunneling microscopic investigation on morphology of magnetic Weyl semimetal YbMnBi₂

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