Electrical switching of multiple and layer-dependent topological spin textures by interlayer polarization coupling
Phys. Rev. B 114, 084413 – Published 14 August, 2026
DOI: https://doi.org/10.1103/grzb-lr1k
Abstract
Based on first-principles calculations and atomistic simulations, this work reveals the underlying mechanism of interlayer polarization coupling in governing topological spin states. We demonstrated polarization-guided Dzyaloshinskii-Moriya interaction sign reversal in the predicted multiferroic material , interlayer polarization coupling mediated the multiple modulation of spin textures in the heterostructure, and the layer-dependent topological Hall effect in the sandwich structure. Combined with magnetic field control and ferroelectric polarization, the stable and flexible switching between various types of skyrmions can be achieved in . In the heterostructure, the synergistic interaction between interlayer polarization coupling and strain effectively modulates the Dzyaloshinskii-Moriya interaction strength and magnetic anisotropy, enabling continuous and reversible transitions between multiple spin textures, including skyrmions, bimerons, in-plane ferromagnetic states, and out-of-plane ferromagnetic states. The integrates two polarization coupling modes within a single system, establishing a multitopological coupling platform in the vertical dimension. By regulating ferroelectric polarization reversal, directional transfer of spin textures and their topological Hall signals between different layers is achievable, enabling nonvolatile electrical control of the layer-dependent topological Hall effect.
