Band-structure-dependent demagnetization in the Heusler alloy Co 2Mn1-xFexSi

Daniel Steil, Sabine Alebrand, Tobias Roth, Michael Krauß, Takahide Kubota, Mikihiko Oogane, Yasuo Ando, Hans Christian Schneider, Martin Aeschlimann, Mirko Cinchetti

研究成果: Article査読

42 被引用数 (Scopus)


We investigate the ultrafast demagnetization for two Heusler alloys (Co2Mn1-xFexSi) with a different lineup of the minority band gap and the Fermi level. Even though electronic spin-flip transitions are partially blocked by the band gap in one compound, the respective magnetization dynamics, as measured by the time-resolved Kerr effect, are remarkably similar. Based on a dynamical model that includes momentum and spin-dependent carrier scattering, we show that the magnetization dynamics are dominated by hole spin-flip processes, which are not influenced by the gap.

ジャーナルPhysical review letters
出版ステータスPublished - 2010 11 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Band-structure-dependent demagnetization in the Heusler alloy Co <sub>2</sub>Mn<sub>1-x</sub>Fe<sub>x</sub>Si」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。