Title :
Ultrafast photoinduced softening in a ferromagnetic semiconductor
Author :
Wang, J. ; Khodaparast, A. ; Kono, J. ; Slupinski, T. ; Owia, A. ; Munekata, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Abstract :
Two-color time-resolved magneto-optical Kerr spectroscopy is used to manipulate and detect the dynamics of carrier-induced ferromagnetism in III-V ferromagnetic semiconductors. Our data demonstrates that magnetic properties, e.g., the coercivity, can be tuned reversibly and nonthermally on subpicosecond time scale.
Keywords :
III-V semiconductors; Kerr magneto-optical effect; carrier density; coercive force; ferromagnetic materials; time resolved spectra; III-V ferromagnetic semiconductors; carrier-induced ferromagnetism; coercivity; ferromagnetic semiconductor; magnetic properties; magneto-optical Kerr spectroscopy; subpicosecond time scale; two-color time-resolved spectroscopy; ultrafast photoinduced softening; Coercive force; Delay effects; Magnetic properties; Magnetooptic effects; Nonlinear optics; Pulse amplifiers; Quantum computing; Softening; Spectroscopy; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-749-0
DOI :
10.1109/QELS.2003.237863
