Ultrafast Time-Resolved Faraday Rotation in EuO Thin Films

F. Liu; T. Makino; T. Yamazaki; K. Ueno; A. Tsukazaki; T. Fukumura; Y. Kong; M. Kawasaki

doi:10.1103/PhysRevLett.108.257401

Ultrafast Time-Resolved Faraday Rotation in EuO Thin Films

Materials Science 2015-06-05 v2

Authors: F. Liu , T. Makino , T. Yamazaki , K. Ueno , A. Tsukazaki , T. Fukumura , Y. Kong , M. Kawasaki

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

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 55 K. The magnetization enhancement component decays in ~1 ns. The realization of the transient collective ordering is attributable to the enhancement of the f-d exchange interaction.

Keywords

ultrafast magnetization dynamics thin film magnetism thin films

Cite

@article{arxiv.1205.2818,
  title  = {Ultrafast Time-Resolved Faraday Rotation in EuO Thin Films},
  author = {F. Liu and T. Makino and T. Yamazaki and K. Ueno and A. Tsukazaki and T. Fukumura and Y. Kong and M. Kawasaki},
  journal= {arXiv preprint arXiv:1205.2818},
  year   = {2015}
}

Comments

8 pages, 4 figures, accepted for publication in Phys. Rev. Lett

Ultrafast Time-Resolved Faraday Rotation in EuO Thin Films

Abstract

Keywords

Cite

Comments

Related papers