论文标题
各向异性dzyaloshinskii-moriya相互作用，受到二维三元化合物中D2D晶体对称性保护的相互作用
Anisotropic Dzyaloshinskii-Moriya interaction protected by D2d crystal symmetry in two-dimensional ternary compounds
论文作者
论文摘要
磁性天际，受拓扑保护的手性旋转旋转准颗粒引起了基本物理和应用的极大关注。最近，发现二维（2D）Van der Waals（VDW）磁铁引起了极大的兴趣，因为它们具有吸引人的物理特性。此外，实验和理论作品都表明，各向同性Dzyaloshinskii Moriya相互作用（DMI）可以在2D磁铁或基于Ferromagnet的异质结构中实现。但是，尚未报道具有各向异性DMI的2D磁铁。在这里，通过使用第一原理计算，我们公布了2D三元化合物MCUX2中可以存在受D2D晶体对称性保护的各向异性DMI。有趣的是，通过使用微磁模拟，我们证明了铁磁（FM）反扰动，FM Bimerons，抗磁性（AFM）Antiskyrmions和AFM Bimerons可以在MCUX2家族中实现。我们的发现开辟了一条途径，用2D磁铁中的D2D晶体对称性保护，用各向异性DMI创建Antiskyrmions和Bimerons。
Magnetic skyrmions, topologically protected chiral spin swirling quasiparticles, have attracted great attention in fundamental physics and applications. Recently, the discovery of two-dimensional (2D) van der Waals (vdW) magnets has aroused great interest due to their appealing physical properties. Moreover, both experimental and theoretical works have revealed that isotropic Dzyaloshinskii Moriya interaction (DMI) can be achieved in 2D magnets or ferromagnet-based heterostructures. However, 2D magnets with anisotropic DMI haven't been reported yet. Here, via using first-principles calculations, we unveil that anisotropic DMI protected by D2d crystal symmetry can exist in 2D ternary compounds MCuX2. Interestingly, by using micromagnetic simulations, we demonstrate that ferromagnetic (FM) antiskyrmions, FM bimerons, antiferromagnetic (AFM) antiskyrmions and AFM bimerons can be realized in MCuX2 family. Our discovery opens up an avenue to creating antiskyrmions and bimerons with anisotropic DMI protected by D2d crystal symmetry in 2D magnets.
