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

doi:10.1021/acsami.0c04449

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

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

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.

Original language	English (US)
Pages (from-to)	25143-25149
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	12
Issue number	22
DOIs	https://doi.org/10.1021/acsami.0c04449
State	Published - Jun 3 2020

Keywords

2D material
2H-phase
metal-insulator transition
structural phase transition
vanadium diselenide

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1021/acsami.0c04449

Cite this

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title = "Structural Phase Transition of Multilayer VSe2",

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.",

keywords = "2D material, 2H-phase, metal-insulator transition, structural phase transition, vanadium diselenide",

author = "Dian Li and Xiong Wang and Kan, {Chi Ming} and Daliang He and Zejun Li and Qing Hao and Hongbo Zhao and Changzheng Wu and Chuanhong Jin and Xiaodong Cui",

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T1 - Structural Phase Transition of Multilayer VSe2

AU - Li, Dian

AU - Wang, Xiong

AU - Kan, Chi Ming

AU - He, Daliang

AU - Li, Zejun

AU - Hao, Qing

AU - Zhao, Hongbo

AU - Wu, Changzheng

AU - Jin, Chuanhong

AU - Cui, Xiaodong

PY - 2020/6/3

Y1 - 2020/6/3

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AB - 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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KW - structural phase transition

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