在CRI单层中完全光学控制skyrmion配置
M Kazemi1, A Kudlis2,3,4, P F Bessarab2,5
1Science Institute, University of Iceland, Dunhagi-3, IS-107, Reykjavík, Iceland. mak99@hi.is.
Scientific reports
|May 22, 2024
概括
研究人员探索了用极化光控制CRI3单层中的磁性 skyrmions. 光诱导的刺激子可以操纵斯基米翁的大小和寿命,为磁性结构的新型光学控制铺平了道路.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 这就是Spintronics.
背景情况:
- 像skyrmions这样的拓磁性结构对于下一代数据存储和自旋电子设备至关重要.
- 通过外部刺激,特别是光线来控制这些结构,为超快速和节能操纵提供了途径.
- 二维 (2D) 磁铁正在成为探索新型磁现象的有希望的平台.
研究的目的:
- 为了研究利用循环偏光在CRI3单层中操纵磁性 skyrmions的可行性.
- 了解光-物质相互作用的基本机制,特别是激子在调解 skyrmion 动态中的作用.
- 通过光来证明对 skyrmion 特性如尺寸和寿命的控制.
主要方法:
- 在CrI3单层中,理论探索循环极化光与磁性 skyrmions 之间的相互作用.
- 模拟明亮激子在介导光子极化对磁化有选择性的影响中的作用.
- 分析 skyrmion 尺寸和寿命与落下的光强度和极化之间的依赖.
主要成果:
- 通过CRI3单层中的明亮激子调解建立了有效的 skyrmion-light 相互作用.
- 证明光子极化选择性地影响这些刺激子的磁化.
- 通过显示 skyrmion 尺寸和寿命对光强度和偏振的依赖性来量化光诱导的 skyrmion 动态.
结论:
- 循环极化光可以有效地操纵CrI3单层中的磁性 skyrmions.
- 刺激子-光子相互作用为基于光的磁拓结构的控制提供了一个可行的机制.
- 托管激子的2D磁体为开发光控制的自旋电子设备提供了一个有前途的平台.
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