Magneto-optical spectroscopy in the valence-band energy regime: relationship to the magnetocrystalline anisotropy
Magneto-optical spectroscopy in the valence-band energy regime: relationship to the magnetocrystalline anisotropy
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DOI：
10.1016/s0304-8853(98)00198-x
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发表时间：
1998-10-01
影响因子：
2.7
通讯作者：
Oppeneer, PM
中科院分区：
文献类型：
--
作者：
Oppeneer, PM
两个方面的磁光（MO）光谱的价带能量制度被认为是。首先，我们推导出一个求和规则表达式，该表达式将非对角电导率的频率积分吸收部分与轨道矩的一部分联系起来。第二，我们认为在MO谱的磁晶各向异性之间的关系，一方面，和磁晶各向异性的轨道时刻，和磁晶各向异性能（MAE），另一方面。通过微扰理论表达式，MAE与轨道矩的各向异性有关。后者又通过导出的求和规则表达式与MO谱中的各向异性相连接。作为例子，我们调查，特别是，有序化合物FePd，也CoPd，FePt和CoPt。(C)1998 Elsevier Science B.V.保留所有权利。
Two aspects of magneto-optical (MO) spectroscopy in the valence-band energy regime are considered. First, we derive a sum rule expression that links the frequency integrated absorptive part of the off-diagonal conductivity to a part of the orbital moment. Second, we consider the relationship between the magnetocrystalline anisotropy in the MO spectrum, on the one hand, and the magnetocrystalline anisotropy in the orbital moment, and the magnetocrystalline anisotropy energy (MAE), on the other hand. The MAE is related to the anisotropy in the orbital moment through a perturbation theory expression. The latter is in turn connected to the anisotropy in the MO spectrum through the derived sum rule expression. As examples we investigate, in particular, the ordered compound FePd, and also CoPd, FePt, and CoPt. (C) 1998 Elsevier Science B.V. All rights reserved.