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Probing the 3d spin momentum with X-ray emission spectroscopy:: The case of molecular-spin transitions

被引：256
作者：
Vankó, Gyoergy
Neisius, Thomas
Molnár, Gabor
Renz, Franz
Kárpáti, Szilvia
Shukla, Abhay
de Groot, Frank M. F.
机构：
[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[2] Univ Aix Marseille 3, Fac Sci & Tech, F-13397 Marseille 20, France
[3] CNRS, UPR 8241, Chim Coordinat Lab, F-31077 Toulouse, France
[4] Johannes Gutenberg Univ Mainz, Inst Anorgan Chem & Analyt Chem, D-55099 Mainz, Germany
[5] Eotvos Lorand Univ, Dept Nucl Chem, H-1118 Budapest, Hungary
[6] Univ Paris 06, Inst Mineral & Phys Milieux Condensees, F-75252 Paris 05, France
[7] Univ Utrecht, Dept Inorgan Chem & Catalysis, NL-3584 CA Utrecht, Netherlands
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 24期
关键词：
D O I：
10.1021/jp0615961
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report X-ray emission spectra of Fe-III, Fe-II, and Co-II spin-crossover compounds in their high-spin and low-spin forms. It is shown that all X-ray emission features are sensitive to the spin state. Variations of the K beta and the K alpha emission line shapes, which are in agreement with theory, can be used as quantitative probes of the spin state; it is suggested that with appropriate reference experiments one can extract the spin momentum for a general case. Resonant X-ray emission spectra unveil details of the redistribution of electrons on the 3d levels associated with the spin-state change by revealing features at the X-ray absorption preedge not accessible through standard absorption measurements.
引用
收藏
页码：11647 / 11653
页数：7
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