在全氧化物铁磁/近二维电子气体接口上引发的强旋转电荷转换的接口旋转轨道合.
Mi-Jin Jin1,2, Guang Yang2,3, Doo-Seung Um4
1Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
ACS applied materials & interfaces
|March 13, 2025
概括
功能性氧化物La1-CaMnO3/SrTiO3通过Rashba-Edelstein效应 (REE) 显示出高效的旋转电荷转换. 这种全氧化物接口显示出开发热稳定的自旋电子设备的前景.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 这就是Spintronics.
背景情况:
- 功能性氧化物和混合结构是旋转器件的关键.
- 接口旋转轨道合和Rashba-Edelstein效应 (REE) 对于旋转电荷转换至关重要.
- 热耐受性是实际的自旋电子应用的关键要求.
研究的目的:
- 在全氧化物异构结构中证明有效的旋转电荷转换.
- 调查 La1-CaMnO3/SrTiO3 (LCMO/STO) 系统中接口旋转轨道合和 REE 的作用.
- 探索LCMO/STO在热稳定的自旋电子装置中的潜力.
主要方法:
- 在La1-CaMnO3 (LCMO) 和准二维 (准-2D) SrTiO3 (STO) 之间制造一个全氧化物接口.
- 使用STO表面的氧气空缺生成一个准2D接口.
- 测量旋转到充电的转换效率.
主要成果:
- 实现了高效的旋转到充电转换,效率为 θ ≈ 2.32 ± 1.3 nm.
- 在LCMO/STO接口上观察到增强的接口旋转轨道合.
- 转换效率归因于相反的Rashba-Edelstein效应,与金属系统相比显示出显著的价值.
结论:
- 在LCMO/STO的二维电子气体系统中,旋转到充电的转换效率很高.
- 这种全氧化物接口是开发耐热自旋电子内存和晶体管应用程序的有希望的平台.
- 这些发现突显了氧化物异构结构在先进的自旋电子学中的潜力.
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