Magnetic skyrmions in atomic thin CrI3 monolayer
Magnetic skyrmions in atomic thin CrI3 monolayer
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DOI：
10.1063/1.5096782
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发表时间：
2019-06-10
影响因子：
4
通讯作者：
Das, Suprem R.
中科院分区：
文献类型：
--
作者：
Behera, Aroop K.;Chowdhury, Sugata;Das, Suprem R.
在这封信中，我们报告了在最近发现的单原子薄的二维CrI3中，以磁性skyrmions形式的拓扑保护自旋织构的可视化。通过结合密度泛函理论和原子自旋动力学模拟，我们证明了在0K温度下，在CrI3晶格上施加面外电场有利于形成10nm以下的天空粒子。自旋织构的产生是由于磁晶各向异性、Dzyaloshinskii-Moriya相互作用和垂直电场之间的强相关性，其形状和大小可以随磁场调节。这一发现将为原子尺度的量子工程和精密传感开辟道路。
In this letter, we report on the visualization of topologically protected spin textures, in the form of magnetic skyrmions, in recently discovered monoatomic-thin two-dimensional CrI3. By combining density functional theory and atomistic spin dynamic simulation, we demonstrate that an application of an out-of-plane electric field to the CrI3 lattice favors the formation of sub-10nm skyrmions at 0K temperature. The spin texture arises due to a strong correlation between magnetocrystalline anisotropy, Dzyaloshinskii-Moriya interaction, and the vertical electric field, whose shape and size could be tuned with the magnetic field. Such a finding will open avenues for atomic-scale quantum engineering and precision sensing.