Global ETD Search
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Showing 1 to 5 of 5 for “"acoustic phonon scattering"”.
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Acoustic Phonon Scattering in Modulation Doped Aluminum(x) Gallium(1-X) Arsenide/gallium Arsenide Heterojunctions
We investigate acoustic deformation potential scattering in Al$\sb{\rm x}$Ga$\sb{1-\rm x}$As/GaAs modulation doped heterojunctions. We review previous measurements of the deformation potential constant Z and discuss the controversy over the discrepancy between the measured value of Z in bulk GaAs …
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Monte Carlo Calculations of Parallel and Perpendicular Electron Transport in Gallium-Arsenide Heterolayers
… study in terms of electronic states and scattering mechanisms for these important artificial semiconductor structures. Polar optical, acoustic phonon scattering (coupled by the deformation potential or piezoelectrically) and ionized impurity scattering are taken into consideration. The …
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Spectral properties of semiconductor nanocrystals and their applications
… structure of the bandedge exciton and 2) exciton-acoustic phonon scattering. We find that neither theory is able to adequately explain our measurements in isolation. We conclude that a comprehensive model that includes both physical mechanisms is required to explain our experimental results.
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Properties of Type-II ZnTe/ZnSe Submonolayer Quantum Dots Studied via Excitonic Aharonov-Bohm Effect and Polarized Optical Spectroscopy
… AB exciton decoherence is due to transport-like (acoustic phonon) scattering of the electrons moving in the ZnSe barriers, but with substantially smaller magnitude of electron-phonon coupling constant due to relatively strong electron-hole coupling within these type-II QDs.</p> <p>In Chapter 5 I …
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High frequency phonon propagation and detection in III-V semiconductors
… propagation and detection of high frequency acoustic phonons in GaAs and InAs is studied. .Phonon imaging is used to study scattering of acoustic phonons in GaAs and angular dispersion of acoustic phonons in InAs. Photoluminescence spectroscopy is used to study the effects of nonequilibrium …