Applied Physics Letters, volume 126, issue 8
Valley-contrasting physics, topological bands, and Dirac cone in the charge density wave phase of a 1T-MoS2 monolayer
1
College of Physics and Electronic Information, Yunnan Normal University 1 , Kunming 650500,
2
Yunnan Key Laboratory of Opto-Electronic Information Technology 2 , Kunming 650500,
3
Faculty of Science/Faculty of Information Engineering and Automation, Kunming University of Science and Technology 3 , Kunming 650500,
4
State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University 4 , Guangzhou 510275,
Publication type: Journal Article
Publication date: 2025-02-24
Journal:
Applied Physics Letters
scimago Q1
SJR: 0.976
CiteScore: 6.4
Impact factor: 3.5
ISSN: 00036951, 10773118
Abstract
Charge density waves (CDWs), valley-contrasting physics, and topological bands have been observed in 1T, 1H, and 1T′ transition metal dichalcogenides (TMDs), respectively, but rarely observed together in a single TMD due to the completely different physical origins. This study discovers 1T-MoS2 monolayers can possess the valley-contrasting physics. Furthermore, the topological bands, Dirac cones, diamond-chain, and zigzag CDW can be induced by biaxial strain, indicating the exotic roles of the strain. Our findings not only broaden the way of searching the valley semiconductors but also open a door to study the topological bands and Dirac cone of CDW phases.
Found
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