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 |
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論文番号 | 257401 |
ジャーナル | Physical review letters |
巻 | 108 |
号 | 25 |
DOI | |
出版ステータス | Published - 2012 6月 19 |
外部発表 | はい |
ASJC Scopus subject areas
- 物理学および天文学(全般)