Spin-Orbital Correlated Dynamics in the Spinel-Type Vanadium Oxide MnV_{2}O_{4}

We investigate the magnetic dynamics in the spinel-type vanadium oxide MnV_{2}O_{4}. Inelastic neutron scattering around 10 meV and a Heisenberg model analysis have revealed that V^{3+} spin-wave modes exist at a lower-energy region than previously reported. The scattering around 20 meV cannot be re...

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Published inPhysical review letters Vol. 119; no. 1; p. 017201
Main Authors Matsuura, Keisuke, Sagayama, Hajime, Uehara, Amane, Nii, Yoichi, Kajimoto, Ryoichi, Kamazawa, Kazuya, Ikeuchi, Kazuhiko, Ji, Sungdae, Abe, Nobuyuki, Arima, Taka-Hisa
Format Journal Article
LanguageEnglish
Published United States 07.07.2017
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Summary:We investigate the magnetic dynamics in the spinel-type vanadium oxide MnV_{2}O_{4}. Inelastic neutron scattering around 10 meV and a Heisenberg model analysis have revealed that V^{3+} spin-wave modes exist at a lower-energy region than previously reported. The scattering around 20 meV cannot be reproduced with the spin-wave analysis. We propose that this scattering could originate from the spin-orbital coupled excitation. This scattering is most likely attributable to V^{3+} spin-wave modes, entangled with the orbital hybridization between t_{2g} orbitals.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.119.017201