Structural Transition in Few-Layer Group-IV Monochalcogenides Induced by Mechanical Forces
學年 114
學期 2
出版（發表）日期 2026-05-19
作品名稱 Structural Transition in Few-Layer Group-IV Monochalcogenides Induced by Mechanical Forces
作品名稱（其他語言）
著者 Redhwan Moqbel; Krishna Ranganayakulu Vankayala; Rajesh Kumar Ulaganathan; Raman Sankar; Min-Nan Ou; Chi-Cheng Lee; Kung-Hsuan Lin
單位
出版者
著錄名稱、卷期、頁數 ACS Omega 11(21), p.31757−31767
摘要 Monolayers of group IV monochalcogenides are predicted to exhibit multiferroic behavior, combining both ferroelectric and ferroelastic properties at room temperature. However, the ferroelasticity of these materials has not yet been investigated experimentally. We theoretically report ferroelastic properties in few-layer SnSe, which demonstrate multiferroic behavior. Experimentally, polarization-resolved second-harmonic generation (SHG) measurements were conducted on few-layer SnSe flakes to reveal their in-plane polarization along the armchair direction. A force-induced structural transition was observed in several flakes of SnSe, as confirmed by SHG analysis. First-principles calculations elucidate the strain-dependent SHG response and suggest that the structural transition is associated with the process of ferroelastic or partial ferroelastic switching.
關鍵字
語言 en_US
ISSN 24701343
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版
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