All-optical characterisation of the spintronic Heusler compound Co2Mn0.6Fe0.4Si

Thomas Sebastian, Yuki Kawada, Björn Obry, Thomas Brächer, Philipp Pirro, Dmytro A. Bozhko, Alexander A. Serga, Hiroshi Naganuma, Mikihiko Oogane, Yasuo Ando, Burkard Hillebrands

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14 Citations (Scopus)

Abstract

This article is devoted to the evaluation of the material parameters of the Heusler compound Co2Mn0.6Fe0.4Si via Brillouin light scattering spectroscopy. Recently, cobalt-based Heusler compounds and, in particular, the compound Co2Mn0.6Fe0.4Si have attracted huge interest in the fields of spintronics and magnon spintronics. Thus, evaluation of the material parameters that govern spin dynamics in the gigahertz regime is essential to develop and understand advanced experimental scenarios as well as potential technical applications. We demonstrate the evaluation of these parameters based on wavevector as well as time-resolved Brillouin light scattering spectroscopy. The focus of our study is the determination of the spin-wave damping in an individual microstructure as wells as of the exchange constant of Co2Mn0.6Fe0.4Si - parameters, that are difficult to estimate with alternative techniques.

Original languageEnglish
Article number164015
JournalJournal of Physics D: Applied Physics
Volume48
Issue number16
DOIs
Publication statusPublished - 2015 Apr 29

Keywords

  • Brillouin light scattering
  • magnonics
  • spin waves

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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    Sebastian, T., Kawada, Y., Obry, B., Brächer, T., Pirro, P., Bozhko, D. A., Serga, A. A., Naganuma, H., Oogane, M., Ando, Y., & Hillebrands, B. (2015). All-optical characterisation of the spintronic Heusler compound Co2Mn0.6Fe0.4Si. Journal of Physics D: Applied Physics, 48(16), [164015]. https://doi.org/10.1088/0022-3727/48/16/164015