For the first time femtosecond X-ray diffraction measures the coherent strain connected to a zone-folded longitudinal acoustic phonon optically excited in a GaAs/AlGaAs superlattice, giving direct evidence for the displacive excitation mechanism.
Coherent phonons in a semiconductor superlattice studied by femtosecond X-ray diffraction
2005 Quantum Electronics and Laser Science Conference ; 2 ; 745-747 Vol. 2
2005-01-01
2079899 byte
Conference paper
Electronic Resource
English
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