Photoinduced precession of magnetization in ferromagnetic (Ga,Mn)As

Y. Hashimoto, S. Kobayashi, H. Munekata

Research output: Contribution to journalArticlepeer-review

93 Citations (Scopus)

Abstract

Precession of magnetization induced by pulsed optical excitation is observed in a ferromagnetic semiconductor (Ga,Mn)As by time-resolved magneto-optical measurements. It appears as complicated oscillations of a polarization plane of linearly polarized probe pulses, but is reproduced by gyromagnetic theory incorporating an impulsive change in an effective magnetic field due to a change in the magnetic anisotropy. The shape of the impulse suggests a significant nonthermal contribution of photogenerated carriers to the change in anisotropy through spin-orbit interaction.

Original languageEnglish
Article number067202
JournalPhysical Review Letters
Volume100
Issue number6
DOIs
Publication statusPublished - 2008 Feb 13
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Photoinduced precession of magnetization in ferromagnetic (Ga,Mn)As'. Together they form a unique fingerprint.

Cite this