Effect of optical spin injection on ferromagnetically coupled Mn spins in the III-V magnetic alloy semiconductor (Ga, Mn)As

A. Oiwa, Y. Mitsumori, R. Moriya, T. Slupinski, H. Munekata

Research output: Contribution to journalArticle

159 Citations (Scopus)

Abstract

The Photoinduced magnetization in ferromagnetic (Ga, Mn)As thin films was reported. It was found that the optically generated spin-polarized holes changes the orientation of ferromagnetically coupled Mn spins and caused a large changed in magnetization, being 15% of the saturation magnetization, without the application of magnetic field. The results suggested that a small amount of non equilibrium carrier spins can cause collective rotation of Mn spins, presumably through the p-d exchange interaction.

Original languageEnglish
Article number137202
Pages (from-to)1372021-1372024
Number of pages4
JournalPhysical Review Letters
Volume88
Issue number13
Publication statusPublished - 2002 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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