论文标题
二维磁电磁性多效型在二维磁性多效中的电动可切换RASHBA型Dzyaloshinskii-Moriya的相互作用和Skyrmion
Electrically switchable Rashba-type Dzyaloshinskii-Moriya interaction and skyrmion in two-dimensional magnetoelectric multiferroics
论文作者
论文摘要
实现拓扑磁性及其电控制是Spintronics中的密集主题，因为它们在信息存储和逻辑技术中的有希望的应用。在这里，我们揭示了在二维（2D）磁电磁多表演中都可以实现的。使用第一原理计算，我们表明强烈的Dzyaloshinskii-Moriya相互作用（DMI）是形成异国情调磁性的关键成分，可以在2D多膜部通过RashBA效应的垂直电化极化。我们验证了具有垂直磁各向异性（例如CRN单层）的2D多表演器中这种重要的DMI可以促进2D多膜上的Skyrmion。此外，二维多表演中的磁化和电化层的存在为我们提供了独特的机会，可以有效控制DMI强度和手性的电力，从而使拓扑磁性磁性。例如，我们介绍了四个具有不同手性和极性的多效性天际，可以通过外部场来操纵。
Realizing topological magnetism and its electric control are intensive topics in the spintronics due to their promising applications in information storage and logic technologies. Here we unveil that both can be achieved in the two-dimensional (2D) magnetoelectric multiferroics. Using first-principles calculations, we show that strong Dzyaloshinskii-Moriya interaction (DMI), which is the key ingredient for the formation of exotic chiral magnetism, could be induced in 2D multiferroics with vertical electric polarization via Rashba effect. We verify that such significant DMI can promote sub-10 nm skyrmion in 2D multiferroics with perpendicular magnetic anisotropy such as CrN monolayer. In addition, the presence of both magnetization and electric polarization in 2D multiferroics provides us unique opportunity for the effective electric control of both strength and chirality of DMI and thereby the topological magnetism. As an example, we introduce the four multiferroic skyrmions with different chirality and polarity that can be manipulated by external field.
