HIGH-ENERGY-SPECTROSCOPY STUDIES OF A CHARGE-TRANSFER INSULATOR - X-RAY-SPECTRA OF ALPHA-FE2O3

被引：44
作者：
DRAGER, G [1 ]
CZOLBE, W [1 ]
LEIRO, JA [1 ]
机构：
[1] UNIV TURKU,DEPT APPL PHYS,SF-20500 TURKU 50,FINLAND
来源：
PHYSICAL REVIEW B | 1992年 / 45卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.45.8283
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
X-ray emission and absorption spectra of alpha-Fe2O3 have been arranged on a common binding-energy scale and compared with results of multiplet theory and cluster calculations. In the case of the Fe L-alpha emission and the Fe K absorption, the information content of x-ray spectroscopy has been further increased by measuring and analyzing linearly polarized spectra. The results of the x-ray spectroscopic investigations and their comparison with the theory complement the findings of other types of high-energy spectroscopy and seems to provide good support for the validity of certain cluster theories. Especially, x-ray spectra reflect the strong influence of correlation and charge-transfer effects on the electronic structure of alpha-Fe2O3 and support the suggestion that this compound should belong to the class of charge-transfer insulators.
引用
收藏
页码：8283 / 8287
页数：5
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