Electronic Structure of Ce(Pd1-xCux)3 (0≤x≤0.133) Studied by Photoemission and Bremsstrahlung Isochromat Spectroscopy
Electronic Structure of Ce(Pd1-xCux)3 (0≤x≤0.133) Studied by Photoemission and Bremsstrahlung Isochromat Spectroscopy
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光电发射和轫致辐射等色光谱研究Ce(Pd1-xCux)3 (0≤x≤0.133)的电子结构
DOI：
10.1143/jpsj.62.3575
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发表时间：
1993
影响因子：
1.7
通讯作者：
A. Fujimori
中科院分区：
文献类型：
--
作者：
S. Ogawa;S. Suga;A. Bocquet;F. Iga;M. Kasaya;T. Kasuya;A. Fujimori
本文报道了Ce（Pd 1-xCux）3（0≤ x ≤0.133）的X射线光电子能谱（XPS）、韧致等色线（BIS）和4f共振紫外光电子能谱（4fRPES或UPS）。随着x的增加，CePd 3的4f 1 BIS峰明显降低，4f 2 BIS峰向低能方向移动，Ce 3d核XPS的3d 94 f0峰强度减弱.并与用杂质安德森模型计算的谱进行了比较。发现随着4 f杂化强度V随x的减小，4 f能级能量e f沿着降低，可以定性地再现实验结果。同时也表明，4f BIS和3d XPS的4f-4f库仑能是不同的.
We report on X-ray photoemission (XPS), Bremsstrahlung isochromat (BIS) and 4 f resonant ultraviolet photoemission (4 f RPES or UPS) spectroscopy of Ce(Pd 1- x Cu x ) 3 (0≤ x ≤0.133). With increasing x , the 4 f 1 BIS peak clearly observable in CePd 3 is strongly depressed, the 4 f 2 BIS peak is found to shift to lower energies and the intensity of the 3 d 9 4 f 0 component of the Ce 3d core XPS is found to become weaker. These experimental results are discussed in comparison with the spectra calculated by using the impurity Anderson model. It is found that lowering of the 4 f level energy e f along with reduction of the 4 f hybridization strength V with x can qualitatively reproduce the experimental result. It is also strongly suggested that the 4 f -4 f Coulomb energies are different for the 4 f BIS and 3 d XPS final states.