X Gao, D Botez, I Knezevic - Journal of Applied Physics, 2008 - pubs.aip.org
We present a detailed investigation of the effects that optical-phonon confinement has on the electronic transport properties of GaAs-based midinfrared multiple-quantum-well (MQW) …
A detailed investigation was made using Raman spectroscopy of the longitudinal and transverse optical phonons in the disordered alloy Al x Ga 1− x As at room temperature …
We have calculated electron–optical-phonon scattering rates in ultrathin GaAs/Al x Ga 1− x As alloy quantum-well systems of finite depth, based on a fully microscopic lattice dynamics …
M Gonzalez, G Rozas, LS Alarcon, M Simonetto… - Materials Science in …, 2021 - Elsevier
We present the determination of aluminum concentration x in epitaxial films of Al x Ga 1-x As grown by Molecular Beam Epitaxy (MBE) on GaAs (100) substrates. A large variety of …
A comprehensive theoretical study of phonons in cubic GaN, AlN, Ga1− xAlxN, and (GaN) m/(AlN) n superlattices (SLs) is reported using both simple and microscopic models. The …
A Prado, L Tosi, M Gonzalez, LS Alarcon… - Physica B: Condensed …, 2022 - Elsevier
In this work we study the nuances of composition determination of Al x Ga 1− x As alloys by Raman spectroscopy. We mainly focus on understanding the effect of induced strain on the …
We present the Raman and infrared spectra of GaAs/Al x Ga 1− x As heterostructures with ultrathin (1 ML thick) Al x Ga 1− x As barriers. The local-mode modification of a one …
K Shim, DN Talwar, HJ Moh - Solid state communications, 1996 - Elsevier
The results of energy gap variation in ternary alloy semiconductors (A1− xBxC) are reported within the tight-binding (TB) framework of Koster and Slater by universalizing TB parameters …
J Wagner, A Fischer, W Braun, K Ploog - Physical Review B, 1994 - APS
First-and second-order Raman scattering has been studied in epitaxial AlAs grown by solid- source molecular-beam epitaxy. A strong resonant enhancement of dipole-forbidden one …