Bulk 4f Electronic States of Ce-Based Heavy Fermion System Probed by High-Resolution Resonance Photoemission
Bulk 4f Electronic States of Ce-Based Heavy Fermion System Probed by High-Resolution Resonance Photoemission
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高分辨率共振光电探测 Ce 基重费米子系统的体 4f 电子态
DOI：
10.1143/jpsj.69.2771
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发表时间：
2000
影响因子：
1.7
通讯作者：
Y. Saitoh
中科院分区：
文献类型：
--
作者：
A. Sekiyama;K. Kadono;K. Matsuda;T. Iwasaki;S. Ueda;S. Imada;S. Suga;R. Settai;H. Azuma;Y. Ōnuki;Y. Saitoh
体敏Ce 3d-4f共振光电子能谱（RPES）以前所未有的高分辨率揭示了重费米子系统CeRu 2Si 2和CeRu 2Ge 2的体Ce 4f谱重量在近藤峰尾部及其自旋轨道伙伴区域的明显差异.两种材料的显着光谱差异与相互相似的“表面敏感”4d-4f RPES形成强烈对比。用单一杂质模型很好地再现了所获得的体敏光谱。考虑晶体电场分裂是重要的估计一个现实的近藤温度从散装4 f光谱。
“Bulk-sensitive” Ce 3 d -4 f resonance photoemission (RPES) with an unprecedentedly high resolution has revealed a clear difference of bulk Ce 4 f spectral weights of heavy fermion system CeRu 2 Si 2 and CeRu 2 Ge 2 in the region of the tail of the Kondo peak and its spin-orbit partner. The significant spectral difference in both materials is in strong contrast to the mutually similar “surface-sensitive” 4 d -4 f RPES. The obtained bulk-sensitive spectra are well reproduced by a single impurity model. Consideration of the crystalline electric field splitting is important for estimating a realistic Kondo temperature from the bulk 4 f spectra.
影响因子：
64.8
作者：
A. Sekiyama;T. Iwasaki;K. Matsuda;Y. Saitoh;Y. Ōnuki;S. Suga
通讯作者：
A. Sekiyama;T. Iwasaki;K. Matsuda;Y. Saitoh;Y. Ōnuki;S. Suga