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

Research output: Contribution to journalArticle

8 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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