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Ab initio study of 3s core-level x-ray photoemission spectra in transition metals

机译:从头开始研究过渡金属中3s核心能级X射线光发射光谱

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摘要

We calculate the 3s- and 4.s-core-level x-ray photoemission spectroscopy (XPS) spectra in the ferromagnetic and nonmagnetic transition metals by developing an ab initio method. We obtain the spectra exhibiting the characteristic shapes as a function of binding energy in good agreement with experimental observations. The spectral shapes are strikingly different between the majority spin channel and the minority spin channel for ferromagnetic metals Ni, Co, and Fe, that is, large intensities appear in the higher binding-energy side of the main peak (satellite) in the majority spin channel. Such satellite or shoulder intensities are also obtained for nonmagnetic metals V and Ru. These behaviors are elucidated in terms of the change of the one-electron states induced by the core-hole potential.
机译:通过开发从头算方法,我们计算了铁磁性和非磁性过渡金属中的3s和4.s核心级x射线光电子能谱(XPS)光谱。我们获得了展现特征形状作为结合能函数的光谱,与实验观察结果非常吻合。对于铁磁性金属Ni,Co和Fe,多数自旋通道和少数自旋通道之间的光谱形状显着不同,也就是说,多数自旋中主峰(卫星)的较高结合能侧会出现较大强度渠道。对于非磁性金属V和Ru也获得了这样的卫星或肩强度。通过由芯孔电势引起的单电子态的变化来阐明这些行为。

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