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나노 구조 물리 연구단
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A density functional theory study of the tunable structure, magnetism and metal-insulator phase transition in VS2 monolayers induced by in-plane biaxial strain

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Title
A density functional theory study of the tunable structure, magnetism and metal-insulator phase transition in VS2 monolayers induced by in-plane biaxial strain
Author(s)
Min Kan; Wang B.; Young Hee Lee; Qiang Sun
Publication Date
2015-04
Journal
NANO RESEARCH, v.8, no.4, pp.1348 - 1356
Publisher
TSINGHUA UNIV PRESS
Abstract
We report a density functional theory study of a phase transition of a VS2 monolayer that can be tuned by the in-plane biaxial strain. This results in both a metal–insulator transition and a low spin–high spin magnetic transition. At low temperature, the semiconducting H-phase is stable and large strain (>3%) is required to provoke the transition. On the other hand, at room temperature (300 K), only a small tensile strain of 2% is needed to induce the phase transition from the semiconducting H-phase to the metallic T-phase together with the magnetic transition from high spin to low spin. The phase diagram dependence on both strain and temperature is also discussed in order to provide a better understanding of the phase stability of VS2 monolayers.
URI
https://pr.ibs.re.kr/handle/8788114/1624
ISSN
1998-0124
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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