التفاصيل البيبلوغرافية
| العنوان: |
Charge Disproportionation for Trimerization and Tetramerization in Spinel-Type AlV2O4. |
| المؤلفون: |
Okawa, Mario, Shimoyama, Ryota, Takayanagi, Ryohei, Yasui, Akira, Ikenaga, Eiji, Katsufuji, Takuro, Saitoh, Tomohiko, Mizokawa, Takashi |
| المصدر: |
Journal of the Physical Society of Japan; 7/15/2024, Vol. 93 Issue 7, p1-6, 6p |
| مستخلص: |
The electronic structure of spinel-type AlV2O4 is investigated using bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES). The main and shoulder peaks of the V 2p3/2 core-level HAXPES spectra indicate charge disproportionation between V2+ and V3+, consistent with the average V valence of +2.5. The estimated V2+/V3+ ratio is compatible with the formation of V trimers and tetramers in AlV2O4, providing a hint to develop a model for charge and orbital orderings in the V pyrochlore lattice. We propose that V2+ tetramers and V3+ trimers on the pyrochlore lattice are naturally explained by an orbitally induced Peierls mechanism. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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