Kavli Affiliate: Jing Wang
| First 5 Authors: Chengxi Huang, Jinzhe Han, Jing Wang, Jintao Jiang, Ziyang Qu
| Summary:
Electric-field switching of magnetic order is of significant physical
interest and holds great potential for spintronic applications. However, it has
rarely been reported in two-dimensional (2D) van der Waals (vdW) magnets due to
the inherently weak interaction between spin order and electric fields. Here we
propose a general spin-potential mechanism that significantly enhances the
magnetoelectric coupling. As a result, the relative stability of different
interlayer magnetic orders in an asymmetric van der Waals heterobilayer can be
reversed by external electric fields via spin-potential coupling. Based on this
mechanism, we designed a series of 2D vdW all-magnetic heterobilayers, such as
CrI3/MnSe2, in which a transition from interlayer ferromagnetic (iFM) to
antiferromagnetic (iAFM) order is realized by a feasible electric field around
0.1 V/{AA}. Our findings not only reveal a novel magnetoelectric coupling
mechanism, but also present a practical strategy for achieving pure
electric-field-driven magnetic order switching
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