Topology Hierarchy of Transition Metal Dichalcogenides Built from Quantum Spin Hall Layers
Abstract
The evolution of the physical properties of 2D material from monolayer limit to the bulk reveals unique consequences from dimension confinement and provides a distinct tuning knob for applications. Monolayer 1T'-phase transition metal dichalcogenides (1T'-TMDs) with ubiquitous quantum spin Hall (QSH) states are ideal 2D building blocks of various 3D topological phases. However, the stacking geometry has been previously limited to the bulk 1T'-WTe2 type. Here, the novel 2M-TMDs consisting of translationally stacked 1T'-monolayers are introduced as promising material platforms with tunable inverted bandgaps and interlayer coupling. By performing advanced polarization-dependent angle-resolved photoemission spectroscopy as well as first-principles calculations on the electronic structure of 2M-TMDs, a topology hierarchy is revealed: 2M-WSe2, MoS2, and MoSe2 are weak topological insulators (WTIs), whereas 2M-WS2 is a strong topological insulator (STI). Further demonstration of topological phase transitions by tunning interlayer distance indicates that band inversion amplitude and interlayer coupling jointly determine different topological states in 2M-TMDs. Finally, it is proposed that 2M-TMDs are parent compounds of various exotic phases including topological superconductors and promise great application potentials in quantum electronics due to their flexibility in patterning with 2D materials.
- Authors:
-
- Tsinghua Univ., Beijing (China)
- Wuhan Univ. (China)
- Peking Univ., Beijing (China)
- ShanghaiTech Univ. (China). Laboratory for Topological Physics
- ShanghaiTech Univ. (China)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
- Nanjing Univ. (China)
- ShanghaiTech Univ. (China). Laboratory for Topological Physics; Univ. of Oxford (United Kingdom). Clarendon Lab.
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China; Science and Technology Commission of Shanghai Municipality (STCSM); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- OSTI Identifier:
- 1998170
- Alternate Identifier(s):
- OSTI ID: 2228870
- Grant/Contract Number:
- AC02-76SF00515; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Materials
- Additional Journal Information:
- Journal Volume: 35; Journal Issue: 21; Journal ID: ISSN 0935-9648
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; angle-resolved photoemission spectroscopy; quantum spin Hall; transition metal dichalcogenides; topological phase transition
Citation Formats
Xu, Lixuan, Li, Yiwei, Fang, Yuqiang, Zheng, Huijun, Shi, Wujun, Chen, Cheng, Pei, Ding, Lu, Donghui, Hashimoto, Makoto, Wang, Meixiao, Yang, Lexian, Feng, Xiao, Zhang, Haijun, Huang, Fuqiang, Xue, Qikun, He, Ke, Liu, Zhongkai, and Chen, Yulin. Topology Hierarchy of Transition Metal Dichalcogenides Built from Quantum Spin Hall Layers. United States: N. p., 2023.
Web. doi:10.1002/adma.202300227.
Xu, Lixuan, Li, Yiwei, Fang, Yuqiang, Zheng, Huijun, Shi, Wujun, Chen, Cheng, Pei, Ding, Lu, Donghui, Hashimoto, Makoto, Wang, Meixiao, Yang, Lexian, Feng, Xiao, Zhang, Haijun, Huang, Fuqiang, Xue, Qikun, He, Ke, Liu, Zhongkai, & Chen, Yulin. Topology Hierarchy of Transition Metal Dichalcogenides Built from Quantum Spin Hall Layers. United States. https://doi.org/10.1002/adma.202300227
Xu, Lixuan, Li, Yiwei, Fang, Yuqiang, Zheng, Huijun, Shi, Wujun, Chen, Cheng, Pei, Ding, Lu, Donghui, Hashimoto, Makoto, Wang, Meixiao, Yang, Lexian, Feng, Xiao, Zhang, Haijun, Huang, Fuqiang, Xue, Qikun, He, Ke, Liu, Zhongkai, and Chen, Yulin. Sat .
"Topology Hierarchy of Transition Metal Dichalcogenides Built from Quantum Spin Hall Layers". United States. https://doi.org/10.1002/adma.202300227. https://www.osti.gov/servlets/purl/1998170.
@article{osti_1998170,
title = {Topology Hierarchy of Transition Metal Dichalcogenides Built from Quantum Spin Hall Layers},
author = {Xu, Lixuan and Li, Yiwei and Fang, Yuqiang and Zheng, Huijun and Shi, Wujun and Chen, Cheng and Pei, Ding and Lu, Donghui and Hashimoto, Makoto and Wang, Meixiao and Yang, Lexian and Feng, Xiao and Zhang, Haijun and Huang, Fuqiang and Xue, Qikun and He, Ke and Liu, Zhongkai and Chen, Yulin},
abstractNote = {The evolution of the physical properties of 2D material from monolayer limit to the bulk reveals unique consequences from dimension confinement and provides a distinct tuning knob for applications. Monolayer 1T'-phase transition metal dichalcogenides (1T'-TMDs) with ubiquitous quantum spin Hall (QSH) states are ideal 2D building blocks of various 3D topological phases. However, the stacking geometry has been previously limited to the bulk 1T'-WTe2 type. Here, the novel 2M-TMDs consisting of translationally stacked 1T'-monolayers are introduced as promising material platforms with tunable inverted bandgaps and interlayer coupling. By performing advanced polarization-dependent angle-resolved photoemission spectroscopy as well as first-principles calculations on the electronic structure of 2M-TMDs, a topology hierarchy is revealed: 2M-WSe2, MoS2, and MoSe2 are weak topological insulators (WTIs), whereas 2M-WS2 is a strong topological insulator (STI). Further demonstration of topological phase transitions by tunning interlayer distance indicates that band inversion amplitude and interlayer coupling jointly determine different topological states in 2M-TMDs. Finally, it is proposed that 2M-TMDs are parent compounds of various exotic phases including topological superconductors and promise great application potentials in quantum electronics due to their flexibility in patterning with 2D materials.},
doi = {10.1002/adma.202300227},
journal = {Advanced Materials},
number = 21,
volume = 35,
place = {United States},
year = {Sat Mar 04 00:00:00 EST 2023},
month = {Sat Mar 04 00:00:00 EST 2023}
}
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