在混合马格尼尼克-等离子体结构中的自旋波的光学控制
Nikolai Kuznetsov1, Huajun Qin2,3, Lukáš Flajšman1
1NanoSpin, Department of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland.
Science advances
|January 10, 2025
概括
研究人员使用光在混合磁性-等离子装置中快速控制了自旋波. 用纳米秒激光脉冲,热塑性加热抑制了20dB的自旋波信号,使新的光学控制方法成为可能.
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
- 纳米技术 纳米技术
背景情况:
- 磁力学利用自旋波进行先进的数据处理.
- 对自旋波的精确空间和时间控制对于信息编码至关重要.
- 混合马格尼尼克-等离子体结构为增强控制提供了潜力.
研究的目的:
- 为了证明旋波传输的快速光学控制.
- 调查热塑性质的使用用于旋波操纵.
- 探索用于设备应用的磁尼克和等离子体的整合.
主要方法:
- 使用伊铁石榴石薄膜和金纳米盘阵列制造混合磁性-塑性结构.
- 单个激光脉冲的应用,用于快速的热塑性加热.
- 测量自旋波信号抑制的测量.
- 微磁模拟以了解潜在的物理.
主要成果:
- 使用纳米秒激光脉冲实现了20dB的自旋波信号抑制.
- 显示了等离子体光吸收和旋波操纵之间强烈的相关性.
- 确定了磁折射作为自旋波控制中的关键机制.
结论:
- 热塑是一种有效的工具,用于快速,光学控制旋波传播.
- 这项工作弥合了磁性和等离子体,使多功能混合装置成为可能.
- 这些发现为新型信息处理技术铺平了道路.
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