Dynamic spin correlations in the frustrated cubic phase of MnV 2O4

Jaiho Chung, Young Sang Song, J. H. Kim, T. Suzuki, T. Katsufuji, M. Matsuda, S. H. Lee

Research output: Contribution to journalArticle

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Abstract

The ferrimagnetic spinel MnV2O4 undergoes an orbital-induced cubic-to-tetragonal distortion at TYK=58 K, below which noncollinear commensurate ferrimagnetic ordering occurs. Using inelastic neutron scattering, we investigated low-energy dynamics in its cubic phase above TYK. We observed two types of coexisting short-range magnetic excitations: the dispersive spin waves centered around the Brillouin-zone centers, k0 = (0, 0, 0), and quasielastic spin fluctuations centered at incommensurate wave vectors, kincom = (ξ, ξ, 0). The coexistence of the two distinct features can be understood as a dynamic realization of the conical spiral order observed in cubic spinels such as CoCr2O4.

Original languageEnglish
Article number094430
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number9
DOIs
Publication statusPublished - 2013 Sep 23

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Spin dynamics
spin dynamics
Spin fluctuations
Inelastic neutron scattering
Spin waves
Brillouin zones
magnons
spinel
inelastic scattering
neutron scattering
orbitals
excitation
energy
spinell

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Dynamic spin correlations in the frustrated cubic phase of MnV 2O4 . / Chung, Jaiho; Song, Young Sang; Kim, J. H.; Suzuki, T.; Katsufuji, T.; Matsuda, M.; Lee, S. H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 88, No. 9, 094430, 23.09.2013.

Research output: Contribution to journalArticle

Chung, Jaiho ; Song, Young Sang ; Kim, J. H. ; Suzuki, T. ; Katsufuji, T. ; Matsuda, M. ; Lee, S. H. / Dynamic spin correlations in the frustrated cubic phase of MnV 2O4 In: Physical Review B - Condensed Matter and Materials Physics. 2013 ; Vol. 88, No. 9.
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