Title :
Coherent spin waves in thin-film GaMnAs
Author :
Wang, D.M. ; Ren, Y.H. ; Merlin, R. ; Liu, X. ; Furdyna, J.K. ; Grimsditch, M.H.
Author_Institution :
Dept. of Phys., Michigan Univ., Ann Arbor, MI, USA
Abstract :
Using pump-probe techniques we study coherent magnons in the ferromagnetic semiconductor GaMnAs. The magnetic anisotropy and spin stiffness constants are determined from the magnetic-field dependence of the frequency of the standing spin waves.
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; magnetic anisotropy; magnetic semiconductors; magnetic thin films; magnons; manganese compounds; semiconductor thin films; spin waves; GaMnAs; GaMnAs thin-film; coherent magnons; coherent spin waves; ferromagnetic semiconductor GaMnAs; magnetic anisotropy; pump-probe techniques; spin stiffness constants; Annealing; Frequency; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic resonance; Manganese; Probes; Pulse measurements; Transistors;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1548868
