Evolution of phonon Raman spectra with orbital ordering in spinel MnV 2O4

K. Takubo, R. Kubota, T. Suzuki, T. Kanzaki, S. Miyahara, N. Furukawa, T. Katsufuji

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

We investigated Raman scattering of spinel MnV2O4, for which orbital ordering of V t2g states below Tc=57 K was proposed. Several peaks evolve in the Raman spectra below Tc, and they show a peculiar polarization dependence, which cannot be explained only by a group theory analysis. We found that it can be explained by considering Mott excitations in the presence of orbital ordering as the dominant intermediate states in the Raman process. This result gives the evidence of orbital ordering in this compound from the viewpoint of electronic structure.

Original languageEnglish
Article number094406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number9
DOIs
Publication statusPublished - 2011 Sep 12

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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