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Charge-spin-orbital fluctuations in mixed valence spinels: Comparative study of ${\mathrm{AlV}}_{2}{\mathrm{O}}_{4}$ and ${\mathrm{LiV}}_{2}{\mathrm{O}}_{4}$

Uehara, Amane ; Shinaoka, Hiroshi ; Motome, Yukitoshi

In: Physical Review B, 2015, vol. 92, no. 19, p. 195150

Mixed valence spinels provide a fertile playground for the interplay between charge, spin, and orbital degrees of freedom in strongly correlated electrons on a geometrically frustrated lattice. Among them, AlV2O4 and LiV2O4 exhibit contrasting and puzzling behavior: self-organization of seven-site clusters and heavy fermion behavior. We theoretically perform a comparative study of...