Hybrid-parity sliding multiferroics
Abstract
Sliding ferroelectrics provide a nonvolatile platform for the electrical control of unconventional magnetism through reversible interlayer sliding. However, the coupling between sliding ferroelectricity and hybrid-parity nonrelativistic spin splitting (NSS) remains largely unexplored. Here, we introduce a class of hybrid-parity sliding multiferroics in which the spontaneous ferroelectric polarization is coupled to certain NSS 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 as a representative example, demonstrating the coupled reversal of the out-of-plane ferroelectric polarization (0.12 pC/m) and the signs of both even- and odd-parity NSS components via an interlayer-sliding pathway with an ultralow barrier of 6 meV/f.u. The signs of these NSS 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.
Cite
@article{arxiv.2607.24337,
title = {Hybrid-parity sliding multiferroics},
author = {Zhenzhou Guo and Jiangtao Yu and Shibo Fang and Jin Cao and Xiaodong Zhou and Yee Sin Ang and Wenhong Wang and Zhenxiang Cheng and Xiaotian Wang},
journal= {arXiv preprint arXiv:2607.24337},
year = {2026}
}