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

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


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.

Original languageEnglish
Article number257401
JournalPhysical review letters
Issue number25
Publication statusPublished - 2012 Jun 19
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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