Raman scattering of folded acoustic phonons in self-assembled Si/Ge dot superlattices
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چکیده
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منابع مشابه
Folded Acoustic Phonon Modes in Ge/Si Quantum Dot Superlattices With Different Periods
We present low-frequency Raman scattering measurements on self-assembled Ge/Si quantum dot superlattice samples grown by molecular beam epitaxy. The samples had different growth parameters, such as the number of periods, nominal thicknesses of Ge layers, and growth temperatures. Raman scattering peaks were observed in the low-frequency region (<30 cm ), which were attributed to the folded acous...
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