TY - JOUR
T1 - Evolution of phonon Raman spectra with orbital ordering in spinel MnV 2O4
AU - Takubo, K.
AU - Kubota, R.
AU - Suzuki, T.
AU - Kanzaki, T.
AU - Miyahara, S.
AU - Furukawa, N.
AU - Katsufuji, T.
PY - 2011/9/12
Y1 - 2011/9/12
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.84.094406
DO - 10.1103/PhysRevB.84.094406
M3 - Article
AN - SCOPUS:80053549830
SN - 1098-0121
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 9
M1 - 094406
ER -