铁电性
凝聚态物理
多铁性
反铁磁性
材料科学
磁矩
磁性
联轴节(管道)
物理
双层
铁磁性
电介质
量子力学
化学
膜
冶金
生物化学
作者
Xingen Liu,A. P. Pyatakov,Wei Ren
标识
DOI:10.1103/physrevlett.125.247601
摘要
Based on the first-principles prediction, we report the magnetoelectric coupling effect in two-dimensional multiferroic bilayer ${\mathrm{VS}}_{2}$. The ground-state $3R$-type stacking breaks space inversion symmetry, therefore introducing a spontaneous polarization perpendicular to the layer plane. We further reveal that the out-of-plane ferroelectric polarization of bilayer ${\mathrm{VS}}_{2}$ can be reversed upon interlayer sliding of an in-plane translation. Each ${\mathrm{VS}}_{2}$ layer has a ferromagnetic state with an opposite magnetic moment between two antiferromagnetically ordered layers. We found that ferroelectricity and antiferromagnetism can be coupled together by a ferrovalley in bilayer ${\mathrm{VS}}_{2}$ to realize electronic control of magnetism. Remarkably, a net magnetic moment is generated by reducing the interlayer distance, and an electric field is able to achieve linear and second-order nonlinear magnetoelectric coupling in bilayer ${\mathrm{VS}}_{2}$.
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