We investigate the spatial distribution of spin/charge current in a nonlocal geometry of a magnetic nanostructure with Py/I/Cu and Cu/Pt contacts and analyze the spin Hall effects by applying finite element method in three dimensions. We find that the inhomogeneous current distribution appears in the Cu/Pt connection area, suggesting the possibility of the spin-signal enhancement by controlling the contact shape and the width of the electrodes. The calculated spin Hall voltage is consistent with the experimentally observed Hall resistance.
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机译：我们研究了用Py / I / Cu和Cu / Pt触点的磁性纳米结构的非局部几何形状中旋转/充气电流的空间分布，并通过在三维中施加有限元方法来分析旋转霍尔效应。我们发现不均匀的电流分布出现在Cu / Pt连接区域中，通过控制电极的接触形状和宽度来提高自旋信号增强的可能性。计算出的旋转霍尔电压与实验观察到的霍尔电阻一致。
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