考虑电流拥挤效应的磁阻柱中电荷和自旋电流的有限元模拟
Finite Element Modeling of Charge and Spin-currents in Magnetoresistive Pillars with Current Crowding Effects
摘要：
在复杂的非共线几何条件下，采用有限元方法对考虑自旋翻转和自旋转移力矩的电荷和自旋扩散方程进行了数值求解。这种方法被用来研究自旋相关的输运巨磁电阻金属柱夹在扩展电极之间的磁阻磁头硬盘驱动器。聚集在电极和柱之间的边界周围的电荷电流对自旋电流具有相当显著的影响。
英文摘要：
The charge and spin diffusion equations taking into account spin-flip and spin-transfer torque were numerically solved using a finite element method in complex non-collinear geometry. This approach was used to study the spin-dependent transport in giant magnetoresistance metallic pillars sandwiched between extended electrodes as in magnetoresistive heads for hard disk drives. The charge current crowding around the boundaries between the electrodes and the pillar has a quite significant influence on the spin current.
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