journal article·2020-06-03

Structural Phase Transition of Multilayer VSe2

Dian Li, Xiong Wang, Chi-ming Kan, Daliang He, Zejun Li, Qing Hao, Hongbo Zhao, Changzheng Wu, Chuanhong Jin, Xiaodong Cui

ACS Applied Materials & Interfaces· Volume 12· Issue 22
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Abstract

Vanadium diselenide (VSe2), a member of the transition metal dichalcogenides (TMDs) family, is emerging as a promising two-dimensional (2D) candidate for the electronic and spintronic device with exotic properties including charge/spin density wave and ferromagnetism. The bulk crystal VSe2 exists in a crystallographic form of 1T-phase with metallic behavior. In this paper, we report a structural phase transition of multilayer VSe2 from 1T to 2H through annealing at 650 K, accompanying a metal–insulator transition. We observe that the 2H-phase is more thermodynamically favorable than the 1T-phase at 2D.
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Research context

OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Physics Department, University of Hong Kong, Hong Kong SAR, P. R. China

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310024, P. R. China

Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science & Technology of China, Hefei, Anhui 230026, P. R. China

Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson, Arizona 85721, United States

Department of Electrical and Computer Engineering, University of Arizona, Tucson, Arizona 85721, United States

Funding

State Administration of Foreign Experts Affairs · Research Grants Council, University Grants Committee · Ministry of Education of the People's Republic of China · Croucher Foundation · Division of Chemical, Bioengineering, Environmental, and Transport Systems · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province

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