Multiplet effects in the Ru L2,3 x-ray-absorption spectra of Ru(IV) and Ru(V) compounds

被引:84
作者
Hu, Z [1 ]
von Lips, H
Golden, MS
Fink, J
Kaindl, G
de Groot, FMF
Ebbinghaus, S
Reller, A
机构
[1] IFW Dresden, Inst Solid State Res, D-01171 Dresden, Germany
[2] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany
[3] Univ Utrecht, Dept Inorgan Chem, NL-3584 CA Utrecht, Netherlands
[4] Univ Hamburg, Inst Anorgan & Angew Chem, D-20146 Hamburg, Germany
来源
PHYSICAL REVIEW B | 2000年 / 61卷 / 08期
关键词
D O I
10.1103/PhysRevB.61.5262
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report combined experimental and theoretical investigations of x-ray absorption at the Ru-L-2,L-3 and O-K thresholds of the Ru(IV) compounds RuO2 and Sr2RuO4 and of the Ru(V) compound Sr4Ru2O9 Significant differences in the intensity distribution of the t(2g)-related and e(g)-related peaks between the L-3 and the L-2 edges are found, due to the combined effects of 4d spin-orbit coupling and the interelectronic Coulomb interaction described by the Slater integrals. The observed spectral features can be well reproduced by crystal-field-multiplet calculations. With increasing the Ru valence from TV to V, the spectra are shifted by congruent to 1.5 eV to higher energy at the Ru-L-2,L-3 edges and congruent to 1.0 eV to lower energy at the O-K edge, which is of the same order of magnitude as on going from the divalent to the trivalent late 3d transition-metal oxides.
引用
收藏
页码:5262 / 5266
页数:5
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