Ultrafast optical control of magnetization in EuO thin films

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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


All-optical pump-probe detection of magnetization precession has been performed for ferromagnetic EuO thin films at 10 K. We demonstrate that the circularly polarized light can be used to control the magnetization precession on an ultrafast time scale. This takes place within the 100-fs duration of a single laser pulse, through combined contribution from two nonthermal photomagnetic effects, i.e., enhancement of the magnetization and an inverse Faraday effect. From the magnetic field dependencies of the frequency and the Gilbert damping parameter, the intrinsic Gilbert damping coefficient is evaluated to be α 3 × 10 -3.

Original languageEnglish
Article number064403
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number6
Publication statusPublished - 2012 Aug 2


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