FeMoO
double perovskites (
=Sr, Ba)Kang, J.-S.*; Kim, J. H.*; Sekiyama, Akira*; Kasai, Shuichi*; Suga, Shigemasa*; Han, S. W.*; Kim, K. H.*; Muro, Takayuki*; Saito, Yuji 
; Hwang, C.*; Olson, C. G.*; Park, B. J.*; Lee, B. W.*; Shim, J. H.*; Park, J.*; Min, B. I.*
The electronic structures of Sr
FeMoO (SFMO) and BaFeMoO (BFMO) double perovskites have been investigated using Fe 2p-3d resonant photoemission spectroscopy (PES) and the Cooper minimum in the Mo 4d photoionization cross section. The states close to the Fermi level are found to have a strongly mixed Mo–Fe t
character, indicating that the Fe valence is far from pure 3+. The Fe 2p
x-ray absorption spectroscopy spectra reveal the mixed-valent Fe 
–Fe
configurations, and a larger Fe component for BFMO than for SFMO, suggesting an operative double exchange interaction. The valence-band PES spectra reveal good agreement with the local-spin-density-approximation (LSDA+U) calculation.
Language |
: | English |
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Journal |
: | |
Volume |
: | 66 |
Number |
: | 11 |
Pages |
: | p.113105_1 - 113105_4 |
Publication Year/Month |
: | 2002/09 |
Paper URL |
: |
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Keywords |
: | Photoemission Spectroscopy; Double Perovskites; Mixed-valent; LSDA+U |
Research Facility |
: |
Accesses |
: |
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Percentile:90.19 Category:Materials Science, Multidisciplinary |
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