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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Enhanced magneto-optical Kerr effects in Py/Ag/Bi trilayers
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Enhanced magneto-optical Kerr effects in Py/Ag/Bi trilayers

机译:PY / AG / BI三层的增强磁光kerr效应

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摘要

We study the magneto-optical (MO) response of permalloy/silver/bismuth (Py/Ag/Bi) trilayer samples in reference to a control Py film by means of spectroscopic generalized MO ellipsometry. The trilayer structures show enhanced MO Kerr amplitude values compared to optical multilayer calculations based upon the Py film reference measurements, especially in the near-infrared region. This indicates that the optical interference conditions accounted for in the model are not sufficient to explain the influence of the Ag/Bi bilayer in the structure. Instead, the local optical and MO properties of the Py layer itself must be modified by the presence of the Ag/Bi bilayer, which could be caused by enhanced effective spin-orbit coupling.
机译:通过光谱通红的Mo椭圆形测定,研究百合氧化物/银/铋(PY / AG / BI)三层样品的磁光(MO)响应(py / Ag / Bi)三层样品。 三层结构与基于PY薄膜参考测量的光学多层计算相比,三层结构显示了增强的Mo Kerr振幅值,尤其是在近红外区域中。 这表明模型中占的光学干扰条件不足以解释AG / BI双层在结构中的影响。 相反,必须通过AG / BI双层的存在来修改PY层本身的局部光学和MO特性,这可能是由增强的有效自旋轨道耦合引起的。

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