Analysis of magnetocrystalline anisotropy oscillations in Co/Pd thin films
Analysis of magnetocrystalline anisotropy oscillations in Co/Pd thin films
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Co/Pd 薄膜磁晶各向异性振荡分析
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
M. Cinal
中科院分区：
文献类型：
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作者：
M. Cinal
磁晶各向异性（MA）的振荡能量随Co/Pd系统中的Pd覆盖层的厚度增加，在一个现实的5-d带紧束缚模型内获得，进行了彻底的分析，以确定唯一的基本起源的振荡。应用几种技术来实现这一目标，包括MA能量的真实的和k空间分解。MA振荡，在一个直接的方式，来自对多数自旋量子阱状态，限制在Pd覆盖层，和相应的对少数自旋共振，都发生在附近的费米能级和附近的点的二维布里渊区。层分辨MA贡献的Pd覆盖层的振荡行为也得到了解释。
The oscillations of magnetocrystalline anisotropy (MA) energy with the increasing thickness of a Pd overlayer in Co/Pd systems, obtained within a realistic five-d-band tight-binding model, are analysed thoroughly in order to determine uniquely the basic origin of the oscillations. Several techniques are applied to achieve this goal, including real- and k-space breakdowns of the MA energy. The MA oscillations are shown, in a direct way, to come from pairs of majority-spin quantum-well states, confined in the Pd overlayer, and the corresponding pairs of minority-spin resonances, both occurring near the Fermi level at and in the neighbourhood of the point of the two-dimensional Brillouin zone. The oscillatory behaviour of layer-resolved MA contributions in the Pd overlayer is also explained.