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Ferroelastic–Ferroelectric Multiferroicity in van der Waals Rhenium Dichalcogenides

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Title
Ferroelastic–Ferroelectric Multiferroicity in van der Waals Rhenium Dichalcogenides
Author(s)
Jeong, Jaehun; Kim, Hyeon-Sik; Kwon, Gihyeon; Jeong, Kwangsik; Lee, Hyangsook; Ji Hye Lee; Park, Myunguk; Lee, Changjun; Yu, Sanghyuck; Kim, Heegoo; Im, Seongil; Yoo, Kyunghwa; Lee, Eunha; Cho, Mann-Ho
Publication Date
2022-05
Journal
Advanced Materials, v.34, no.18
Publisher
John Wiley and Sons Inc
Abstract
© 2022 Wiley-VCH GmbH.2D multiferroics with combined ferroic orders have gained attention owing to their novel functionality and underlying science. Intrinsic ferroelastic–ferroelectric multiferroicity in single-crystalline van der Waals rhenium dichalcogenides, whose symmetries are broken by the Peierls distortion and layer-stacking order, is demonstrated. Ferroelastic switching of the domain orientation and accompanying anisotropic properties is achieved with 1% uniaxial strain using the polymer encapsulation method. Based on the electron localization function and bond dissociation energy of the Re–Re bonds, the change in bond configuration during the evolution of the domain wall and the preferred switching between the two specific orientation states are explained. Furthermore, the ferroelastic switching of ferroelectric polarization is confirmed using the photovoltaic effect. The study provides insights into the reversible bond-switching process and potential applications based on 2D multiferroicity.
URI
https://pr.ibs.re.kr/handle/8788114/11953
DOI
10.1002/adma.202108777
ISSN
0935-9648
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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