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在芯片内空腔共振器中的电流控制的马格农-马格农合
Hanchen Wang1, William Legrand1, Richard Schlitz1
1Department of Materials, ETH Zurich, Zurich 8093, Switzerland.
Nano letters
|May 22, 2025
概括
这项研究表明,旋转电流如何控制双化伊特铁石榴石 (BiYIG) 薄膜中的磁合. 研究人员证明了电流诱导的抑制马格农-马格农合,使可重新配置的马格农设备.
科学领域:
- 这就是Spintronics.
- 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
背景情况:
- 磁器件通过控制自旋电流和磁动力学来提供新的功能.
- 超薄磁膜,如双化伊特铁石榴石 (BiYIG),对于开发先进的磁铁器件至关重要.
- 了解magnon-magnon合是操纵自旋波用于信息处理的关键.
研究的目的:
- 为了在BiYIG中展示空腔和边界模式之间的电流控制的马格诺-马格诺合.
- 调查界面异构性在修改马格农分散和杂交中的作用.
- 探索设计可重新配置的芯片上磁设备的潜力.
主要方法:
- 使用Pt纳米条纹制造超薄BiYIG薄膜.
- 使用微波光谱学对腔和边界马格农模式的表征.
- 使用双极交换理论对马格农分散和杂交的建模.
- 在Pt纳米条纹中通过旋转霍尔效应注入旋转电流.
主要成果:
- 观察到空腔和边界磁子之间的杂交,形成一个反交叉间隙.
- 通过理论建模精确复制马格农模式和杂交.
- 通过在阻尼补偿值以上的旋转电流注入来抑制空腔模式和混合化.
- 通过调节微波功率来控制反交叉间隙的调节.
结论:
- 旋转电流的注入有效地破坏了空洞边界条件,并抑制了马格纳-马格纳合.
- 观察到的现象为探索自旋电流-马格农相互作用提供了一个平台.
- 这些发现为设计芯片上可重新配置的磁设备铺平了道路.
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