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arXiv 0904.2898cond-mat.str-elcond-mat.other
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磁性薄膜磁电阻的非对称场效应

Asymmetric field dependence of magnetoresistance in magnetic films

A. Segal, O. Shaya, M. Karpovski, A. Gerber

摘要:

我们研究了一个不对称的磁场磁电阻,经常观察到的磁性薄膜,特别是,奇数纵向电压峰值,出现在铁磁薄膜的磁化反转过程中,与平面外的磁各向异性。我们认为,异常信号的结果从磁化强度和霍尔电阻率沿样品的微小变化。实验数据可以很好地描述了一个简单的电路模型,后者被支持的分析和数值计算的电流和电场分布在薄膜的磁化强度和霍尔电阻的逐渐变化。

英文摘要:

We study an asymmetric in field magnetoresistance that is frequently observed in magnetic films and, in particular, the odd longitudinal voltage peaks that appear during magnetization reversal in ferromagnetic films, with out-of-plane magnetic anisotropy. We argue that the anomalous signals result from small variation of magnetization and Hall resistivity along the sample. Experimental data can be well described by a simple circuit model, the latter being supported by analytic and numerical calculations of current and electric field distribution in films with a gradual variation of the magnetization and Hall resistance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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