斯基尔米昂-超导电螺旋对在奇拉尔-磁铁-超导电异构结构中的可视化
Yong-Jie Xie1,2, Ang Qian1,3, Bin He1,2
1Institute of Physics, Chinese Academy of Sciences, Beijing National Laboratory for Condensed Matter Physics, Beijing 100190, China.
Physical review letters
|November 1, 2024
概括
研究人员在一个新的异构结构中创建了可控制的 skyrmion-vortex 对. 这一突破使得用于先进的自旋电子设备和拓量子计算应用的磁性 skyrmions 的操纵成为可能.
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
- 量子计算是一种量子计算.
背景情况:
- 磁性 skyrmions 是拓性的旋转纹理,有可能用于旋转器件.
- 斯基尔米恩可以与超导结合,为量子计算提供Majorana零模式.
- 试验控制斯基米翁 - 螺旋对仍然是一个重大挑战.
研究的目的:
- 设计和实验实现可控制的 skyrmion-vortex 对.
- 研究这些对在异构结构中的形成和操纵.
主要方法:
- 制造一个奇拉磁体/超导体异构结构: [Ta/Ir/CoFeB/MgO]7/Nb.
- 稳定零场的尼尔类型的 skyrmions.
- 根据磁场方向观察斯基米昂-超导旋对的形成.
主要成果:
- 成功设计和制造了一个[Ta/Ir/CoFeB/MgO]7/Nb异构结构.
- 实现了零场Neel型 skyrmions的稳定. 实现了零场Neel型 skyrmions的稳定.
- 直接观察到由磁场方向可控制的 skyrmion-superconducting 旋对的形成.
结论:
- 该研究提供了一种有效的实验方法,用于生成和控制 skyrmion-vortex 对.
- 这项工作为利用超导旋操纵斯基米安量子状态提供了一条新途径.
- 潜在的应用包括先进的自旋电子设备和拓量子计算.
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