发表机构
University of Wollongong; Singapore University of Technology and Design; Tiangong University; The Hong Kong Polytechnic University（伍伦贡大学; 新加坡科技设计大学; 天津工业大学; 香港理工大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究探索滑动铁电性与混合奇偶性非相对论自旋分裂的耦合，介绍一类混合奇偶性滑动多铁性材料，通过对称性分析和第一性原理计算，以双层VBr₂为例展示相关特性，扩展了滑动多铁性材料范围及功能。
AI 中文摘要
滑动铁电体为通过可逆层间滑动对非常规磁性进行电控制提供了一个非易失性平台。然而，滑动铁电性与混合奇偶性非相对论自旋分裂（NSS）之间的耦合在很大程度上仍未被探索。本文介绍了一类混合奇偶性滑动多铁性材料，其中自发铁电极化通过层间滑动与某些NSS分量耦合，使这些分量能够以电方式可逆切换。对称性分析确定共面磁体是实现这种形式滑动多铁性的天然平台。第一性原理计算确定双层VBr₂为一个代表性例子，展示了通过具有6 meV/f.u超低势垒的层间滑动途径，面外铁电极化（±0.12 pC/m）以及偶极和奇极NSS分量的符号的耦合反转。这些NSS分量的符号锁定在可滑动切换的铁电极化上，并编码在自旋电流响应中，提供了耦合铁电开关的特征。我们的发现扩展了滑动多铁性材料的范围以及滑动铁电体用于低能量、非易失性逻辑器件的功能。
英文摘要
In this work, we introduce a class of hybrid-parity sliding multiferroics in which the spontaneous ferroelectric polarization is coupled to certain nonrelativistic spin splitting components through interlayer sliding, allowing these components to be reversibly switched in an electrical way. Symmetry analysis identifies coplanar magnets as natural platforms for realizing this form of sliding multiferroicity. First-principles calculations establish bilayer VBr$_2$ as a representative example, demonstrating the coupled reversal of the out-of-plane ferroelectric polarization and the signs of both even- and odd-parity nonrelativistic spin splitting components via an interlayer-sliding pathway. The signs of these nonrelativistic spin splitting components are locked to the sliding-switchable ferroelectric polarization and encoded in the spin-current responses, providing a signature of the coupled ferroic switching. Our findings expand the scope of sliding multiferroics and the functionality of sliding ferroelectrics for low-energy, nonvolatile logic devices.
