Title :
Ultrafast optical manipulation of ferromagnetic order in mn-doped III-V semiconductors
Author :
Wang, J.J. ; Kono, J. ; Oiwa, A. ; Munekata, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX
Abstract :
We have used two-color time-resolved magneto-optical Kerr effect spectroscopy to study the dynamics of spin/magnetic order in InMnAs. We observed ultrafast photo-induced softening due to spin-polarized transient carriers. This transient softening persists only during the carrier lifetime (~ 2 ps). Our data clearly demonstrates that magnetic properties can be strongly modified in an ultrafast manner
Keywords :
III-V semiconductors; Kerr magneto-optical effect; carrier lifetime; ferromagnetic materials; high-speed optical techniques; indium compounds; manganese; spin dynamics; spin polarised transport; time resolved spectroscopy; InMnAs; Mn-doped III-V semiconductors; carrier lifetime; ferromagnetic order; magnetic order dynamics; spin order dynamics; spin-polarized transient carriers; two-color time-resolved magneto-optical Kerr effect spectroscopy; ultrafast photo-induced softening;
Conference_Titel :
Quantum Electronics Conference, 2004. (IQEC). International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-778-4
