Ground-State-Moment-Analysis: A quantitative tool for X-ray magnetic circular dichroism analysis for 3d transition metals
Ground-State-Moment-Analysis: A quantitative tool for X-ray magnetic circular dichroism analysis for 3d transition metals
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基态矩分析：3d 过渡金属 X 射线磁圆二色性分析的定量工具
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
A. Bayer
中科院分区：
文献类型：
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作者：
E. Goering;S. Gold;A. Bayer
通过使用求和规则和X射线磁性圆二色性（XMCD）积分光谱值，实验确定的元素特定的自旋和轨道磁矩可以提取。因此，求和规则忽略所有附加的谱形状信息。根据基态矩及其谱表示，可以拟合出XMCD谱。由于这种方法的信息增益直接与频谱形状的分析有关。简单和复杂的光谱，具有许多不同的可观察的光谱特征，可以定量分析。利用矩量分析方法，对能带结构中不同的未占据部分进行了解析和直观的解释。专注于这种拟合方法，我们将审查最近的应用，铁石榴石和CrO 2，并显示新的结果为Fe-，Mn-，和V-L2，3 XMCD光谱。此外，光谱重叠之间的L2和L3边缘的轻过渡金属网站可以通过这种方法来处理，和定量的磁矩已被提取的光谱。这是未来可能的元素特定重整化技术的基础，用于整个系列的过渡金属，这是非常重要的轻过渡金属网站。
By the use of sum rules and X-ray magnetic circular dichroism (XMCD) integral spectral values, experimentally determined element specific spin- and orbital-magnetic moments could be extracted. Therefore, sum rules neglect all additional spectral shape information. On the basis of so called ground state moments and their spectral representations, XMCD spectra could be fitted. The gain of information due to this method is directly related to the analysis of the spectral shape. Simple and complex spectra, with many different observable spectral features, could be quantitatively analyzed. Different unoccupied parts of the bandstructure have been resolved and intuitively interpreted by the moment analysis procedure. Focusing on this fitting method, we will review recent applications to Iron-Garnets and CrO2 and show new results for Fe-, Mn-, and V-L2,3 XMCD spectra. In addition, spectral overlap between the L2 and L3 edges at the light transition metal site could be handled by this method, and quantitative magnetic moments have been extracted from the spectra. This is the basis for a possible future element specific renormalization technique, used for the whole series of the transition metals, which is very important at the light transition metal site.