Magneto-optic polar Kerr and Faraday effects in periodic multilayers.
Magneto-optic polar Kerr and Faraday effects in periodic multilayers.
复制标题
周期性多层膜中的磁光极克尔效应和法拉第效应。
作者：
Š. Višňovský;K. Postava;T. Yamaguchi
分析了光波垂直入射和极性磁化情况下周期性分层磁性多层膜的磁光效应（法拉第效应和极克尔效应）。从通用的4 × 4-矩阵形式主义简化的分析表示限制在非对角介电常数张量元素的线性项得到的准确性没有损失。MO效应表示为各个层贡献的加权和。给出了用于评价磁光效应趋势的近似表达式。该程序说明了对称单位的周期性系统。讨论了近似的极限。
Magnetooptic (MO) effects in magnetic multilayers with periodically stratified regions are analyzed for the case of normal light wave incidence and polar magnetization (Faraday and polar Kerr effects). From the universal 4 x 4-matrix formalism simplified analytical representations restricted to terms linear in the off-diagonal permittivity tensor elements are obtained with no loss in accuracy. The MO effects are expressed as weighted sums of contributions from individual layers. Approximate expressions useful for the evaluation of trends in MO effects are given for periodic multilayers consisting of blocks with ultrathin magnetic films. The procedure is illustrated on periodic systems built of symmetric units. Limits on the ultrathin approximation are discussed.