Vibrations of atoms in a crystal of the semiconductor gallium arsenide are impulsively shifted to a higher frequency by an optically excited electric current. The related change in the spatial distribution of charge between gallium and arsenic atoms acts back on their motions via electric interactions.
Tuesday, July 14, 2020
Hammer-on technique for atomic vibrations in a crystal
Vibrations of atoms in a crystal of the semiconductor gallium arsenide are impulsively shifted to a higher frequency by an optically excited electric current. The related change in the spatial distribution of charge between gallium and arsenic atoms acts back on their motions via electric interactions.
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