Ultrafast time-resolved faraday rotation in EuO thin films

F. Liu, T. Makino, T. Yamasaki, K. Ueno, A. Tsukazaki, T. Fukumura, Y. Kong, M. Kawasaki

研究成果: Article査読

18 被引用数 (Scopus)

抄録

We have investigated the ultrafast spin dynamics in EuO thin films by time-resolved Faraday rotation spectroscopy. The photoinduced magnetization is found to be increased in a transient manner, accompanied with subsequent demagnetization. The dynamical magnetization enhancement showed a maximum slightly below the Curie temperature with prolonged tails toward both lower and higher temperatures and dominates the demagnetization counterpart at 55K. The magnetization enhancement component decays in ∼1ns. The realization of the transient collective ordering is attributable to the enhancement of the f-d exchange interaction.

本文言語English
論文番号257401
ジャーナルPhysical review letters
108
25
DOI
出版ステータスPublished - 2012 6 19
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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