Skyrmion dynamics under uniaxial anisotropy

D. Ehlers, I. Stasinopoulos, V. Tsurkan, H. A. Krug Von Nidda, T. Fehér, A. Leonov, I. Kézsmárki, D. Grundler, A. Loidl

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Abstract

Broadband microwave spectroscopy has been performed on single-crystalline GaV4S8, which exhibits a complex magnetic phase diagram including cycloidal and Néel-type skyrmion lattice phases below 13 K. At small magnetic fields two collective modes with large frequency separation are found that reflect the cycloid state subject to a large uniaxial anisotropy. In the skyrmion lattice phase three modes are resolved. Analyzing the spin-precessional motion microscopically, we explain the low frequency of the breathing mode in these Néel skyrmions by the hard-axis orientation of relevant spins.

Original languageEnglish
Article number014406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume94
Issue number1
DOIs
Publication statusPublished - Jul 6 2016

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Ehlers, D., Stasinopoulos, I., Tsurkan, V., Krug Von Nidda, H. A., Fehér, T., Leonov, A., Kézsmárki, I., Grundler, D., & Loidl, A. (2016). Skyrmion dynamics under uniaxial anisotropy. Physical Review B - Condensed Matter and Materials Physics, 94(1), [014406]. https://doi.org/10.1103/PhysRevB.94.014406