Surface and bulk 4f photoemission spectra of CeIr 2
Surface and bulk 4f photoemission spectra of CeIr 2
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CeIr 2 的表面和体 4f 光电子发射光谱
DOI：
10.1103/physrevb.59.12294
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发表时间：
1999
影响因子：
3.7
通讯作者：
A. Ochiai
中科院分区：
文献类型：
--
作者：
Hyeong;H. Kumigashira;See;T. Takahashi;H. Aoki;Tsuneaki Suzuki;G. Chiaia;O. Tjernberg;H. Nylén;I. Lindau;A. Ochiai
在Ce 4d → 4f和3d → 4f核阈值下对CeIr 2进行了共振光电子能谱研究。我们还得到了与角度有关的4d → 4f共振谱。表面和体Ce− 4 f谱是利用两个不同阈值下的角度相关谱和共振谱的差异推导出来的。不同的推导方法得到的表面谱和体谱不同，并且由角度依赖性得到的谱与用安德森杂质模型的Gunnarsson-Schönhammer方法得到的理论谱更一致，这意味着两种共振谱可能反映了不同的4 f-去除谱.
Resonance photoemission spectroscopy was performed on CeIr 2 at the Ce 4 d→ 4 f and 3 d→ 4 f core thresholds. We also obtained angle-dependent 4 d→ 4 f resonant spectra. Surface and bulk Ce− 4 f spectra were derived using differences both in the angle-dependent spectra and in the resonant spectra at the two different thresholds. The surface and bulk spectra are different depending on the derivation methods, and the spectra derived from the angle dependence are more consistent with theoretical spectra using the Gunnarsson-Schönhammer method of the Anderson impurity model, which implies that the two resonant spectra may reflect different 4 f-removal spectra.