在温度梯度下的Skyrmion运动和在逻辑设备中的应用.
Ravish Kumar Raj1, Namita Bindal1, Brajesh Kumar Kaushik1
1Department of Electronics and Communication Engineering, Indian Institute of Technology, Roorkee 247667, India.
Nanotechnology
|November 28, 2023
概括
这项研究研究了在温度梯度和旋转转移扭矩下各种磁系统中的 skyrmion 动力学. 研究人员使用磁性 skyrmions 开发了一种节能逻辑设备,展示了 AND,OR 和 half-adder 的功能.
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:
- 对于下一代内存和逻辑设备来说,Skyrmion动态非常重要.
- 在热梯度和各种扭矩下了解skyrmion的行为对于设备设计至关重要.
研究的目的:
- 在温度梯度下研究铁磁体,合成反铁磁体和反铁磁体中的 skyrmion动力学.
- 提出并分析一个基于磁性 skyrmion 的逻辑装置,用于 AND,OR 和 half-adder 运算.
主要方法:
- 在联合力下模拟的 skyrmion 动力学,包括磁性旋转转矩,热STT,差和热诱导双极场.
- 分析了受阻力常数和温度梯度影响的 skyrmion 运动方向.
- 设计和评估了一个交叉合的纳米轨道装置,利用热梯度和电气STT.
主要成果:
- 缓解常数显著影响不同磁结构的 skyrmion 运动方向 (更热/更冷侧).
- 拟议的FM skyrmion设备同时在2x10^11 Am^-2.2执行AND和OR逻辑.
- 通过调整电流密度为3x10^11 Am^-2.实现半子功能.
- 证明了低能耗:33.63 fJ用于AND/OR,25.06 fJ用于半.
结论:
- 在各种磁系统中,Skyrmion的动态可以通过温度梯度和减压来控制.
- 拟议的设备提供同时AND/OR和半子功能,具有高能效.
- 这项工作推动了超高密度和高能效的自旋电子逻辑设备的开发.
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