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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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