Prediction of pulsed laser control of sliding tunneling magnetoresistance in bilayer
Phys. Rev. B 112, 094414 – Published 8 September, 2025
DOI: https://doi.org/10.1103/tgc9-2d8b
Abstract
The ferroelectric properties of type II multiferroic monolayers are intrinsically linked to their magnetic characteristics, wherein the noncollinear spin chirality generates a polarization perpendicular to the spin spiral plane. However, research into the control mechanisms and potential applications of their magnetic structures remains insufficient. In this context, we employ a combination of first-principles calculations and atomistic scale Landau-Lifshitz-Gilbert simulation to predict the simultaneous reversal of polarization and magnetization through a sliding mechanism. Significant alterations in the spin Hamiltonian and second harmonic generation are observed when the ferroelectricity transitions between distinct stable sliding configurations. Furthermore, we propose a strategy for deterministic control of the tunneling magnetoresistance of bilayer employing laser pulses affecting the ultrafast sliding polarization, and achieve continuous switching between magnetic storage states through repeated use of sliding devices. This investigation into the deterministic control of sliding polarization in conjunction with dynamic magnetic fields broadens the prospective applications of two-dimensional noncollinear antiferromagnetic materials in magnetic storage devices and spintronic applications.
