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通过离子液体门和轨道工程操纵氧化物/矿异构中的旋转轨道扭矩

Weikang Liu¹, Liang Liu¹, Bin Cui¹

¹School of Physics, State Key Laboratory for Crystal Materials, Shandong University, Jinan 250100, China.

|November 21, 2023

概括

离子液门控制旋转轨道合 (SOC) 和旋转轨道扭矩 (SOT) 在W3O8-δ/(La,Sr) MnO3.3. 调节电子轨道占用率几乎使先进的旋转电子设备的SOT效率翻了一番.

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:

旋转轨道合 (SOC) 便于电荷到旋转电流的转换,使旋转轨道扭矩 (SOT) 能够用于磁化开关.
在SOC和SOT中电子轨道自由度的确切作用仍然不完全理解.
现有的SOT操纵方法往往缺乏对轨道贡献的精细控制.

研究的目的:

调查离子液体封闭对电荷转自旋转和SOT的影响.
阐明电子轨道占用率和SOT效率之间的关系.
探索新的策略,以增强在自旋电子设备中的SOT.

主要方法:

使用离子液体封闭来调节W3O8-δ/(La,Sr) MnO3异构的电子特性.
在内平面 (dxy) 和外平面 (dz2) 轨道之间研究了Mn/W-d电子的优先占用.
量化了SOT阻尼效应的场效率,并分析了潜在的机制.

主要成果:

证明了离子液体封闭可以可逆地诱导或抑制电荷到旋转电流转换和SOT.
显示调整d电子占用率从dxy到dz2轨道显著提高了SOT缓冲式场效率.
观察到SOT效率几乎增加了两倍,归因于增强的旋转霍尔效应和界面Rashba-Edelstein效应.

结论:

离子液体门提供了一个强大的工具来控制SOC和SOT通过操纵电子轨道配置.
优化轨道占用率为下一代自旋电子应用显著提高SOT效率提供了一条途径.
这些发现代表了旋转轨道电子学的根本进步,为高效设备铺平了道路.

关键词:

全氧化物异构结构的异构结构.磁化切换开关的使用方法轨道占用状态轨道占用状态旋转-轨道扭矩应变工程是一种应变工程.

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