Investigation of an effective anisotropy field involved in photoinduced precession of magnetization in (Ga,Mn)As

S. Kobayashi, Yusuke Hashimoto, H. Munekata

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Photoinduced precession of magnetization in (Ga,Mn)As was studied for a wide range of Mn contents (0.01x0.11) by time-resolved magneto-optical measurements. It was found that an effective anisotropy field decreases with increasing Mn contents. Anisotropy fields were also extracted from photoinduced precession measured at different temperatures and compared with magnetization. Significant enhancement in the amplitude of oscillation in magneto-optical signals occurred with increasing pump power. The mechanism of a change in the anisotropy field with the pump power was discussed.

Original languageEnglish
Article number07C519
JournalJournal of Applied Physics
Volume105
Issue number7
DOIs
Publication statusPublished - 2009 Apr 27
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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