Spin excitations in the skyrmion host Cu2OSeO3

G. S. Tucker, J. S. White, J. Romhányi, D. Szaller, I. Kézsmárki, B. Roessli, U. Stuhr, A. Magrez, F. Groitl, P. Babkevich, P. Huang, I. Živković, H. M. Rønnow

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We have used inelastic neutron scattering to measure the magnetic excitation spectrum along the high-symmetry directions of the first Brillouin zone of the magnetic skyrmion hosting compound Cu2OSeO3. The majority of our scattering data are consistent with the expectations of a recently proposed model for the magnetic excitations in Cu2OSeO3, and we report best-fit parameters for the dominant exchange interactions. Important differences exist, however, between our experimental findings and the model expectations. These include the identification of two energy scales that likely arise due to neglected anisotropic interactions. This feature of our work suggests that anisotropy should be considered in future theoretical work aimed at the full microscopic understanding of the emergence of the skyrmion state in this material.

Original languageEnglish
Article number054401
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume93
Issue number5
DOIs
Publication statusPublished - Feb 1 2016

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Inelastic neutron scattering
Exchange interactions
Brillouin zones
excitation
Identification (control systems)
inelastic scattering
neutron scattering
Anisotropy
interactions
Scattering
anisotropy
symmetry
scattering
energy
Direction compound

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Tucker, G. S., White, J. S., Romhányi, J., Szaller, D., Kézsmárki, I., Roessli, B., ... Rønnow, H. M. (2016). Spin excitations in the skyrmion host Cu2OSeO3. Physical Review B - Condensed Matter and Materials Physics, 93(5), [054401]. https://doi.org/10.1103/PhysRevB.93.054401

Spin excitations in the skyrmion host Cu2OSeO3. / Tucker, G. S.; White, J. S.; Romhányi, J.; Szaller, D.; Kézsmárki, I.; Roessli, B.; Stuhr, U.; Magrez, A.; Groitl, F.; Babkevich, P.; Huang, P.; Živković, I.; Rønnow, H. M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 93, No. 5, 054401, 01.02.2016.

Research output: Contribution to journalArticle

Tucker, GS, White, JS, Romhányi, J, Szaller, D, Kézsmárki, I, Roessli, B, Stuhr, U, Magrez, A, Groitl, F, Babkevich, P, Huang, P, Živković, I & Rønnow, HM 2016, 'Spin excitations in the skyrmion host Cu2OSeO3', Physical Review B - Condensed Matter and Materials Physics, vol. 93, no. 5, 054401. https://doi.org/10.1103/PhysRevB.93.054401
Tucker, G. S. ; White, J. S. ; Romhányi, J. ; Szaller, D. ; Kézsmárki, I. ; Roessli, B. ; Stuhr, U. ; Magrez, A. ; Groitl, F. ; Babkevich, P. ; Huang, P. ; Živković, I. ; Rønnow, H. M. / Spin excitations in the skyrmion host Cu2OSeO3. In: Physical Review B - Condensed Matter and Materials Physics. 2016 ; Vol. 93, No. 5.
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