文献类型：期刊文献

英文题名：Strain effects on polarization in sliding ferroelectrics: Group IV carbides

作者：Wu, Guangze[1];Yan, Yabin[1,2,3];Wang, Xiaoyuan[1,3];Xuan, Fuzhen[1,2,3]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：138

期号：2

外文期刊名：JOURNAL OF APPLIED PHYSICS

收录：;EI(收录号：20252918778538);WOS:【SCI-EXPANDED(收录号:WOS:001528512200003)】；

基金：This work was supported by Science Fund for Creative Research Groups of the National Natural Science Foundation of China (NSFC) (Grant No. 52321002).

语种：英文

外文关键词：Electronic properties - Ferroelectric devices - Ferroelectric materials - Ferroelectricity - Nanoelectronics - Polarization - Silicon compounds - Van der Waals forces

摘要：Two-dimensional sliding ferroelectric materials have garnered significant attention due to their unique ferroelectric mechanism, particularly in van der Waals bilayer and multilayer systems. Strain is a crucial factor in tuning the polarization characteristics of ferroelectric materials. In this study, we systematically investigate the effect of sliding on the ferroelectric properties of GeC, SiC, and SnC using first-principles calculations. We also explore the impact of strain on the polarization and electronic properties of these materials. Our results show that compressive strain leads to a decrease in polarization and an increase in the bandgap, while tensile strain results in an increase in polarization and a decrease in the bandgap. These findings are of great significance for further exploration and optimization of sliding ferroelectric materials in micro-nano electronic devices. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) license (https://creativecommons.org/licenses/by-nc-nd/4.0/).