We have determined the main parameters of the quasi-one-dimensional excitons confined in GaAs V-shaped quantum wires, namely exciton Bohr radius and binding energy, by two-photon absorption and magnetoluminescence experiments. The experimental results are in excellent agreement with our calculations, based on realistic wave functions for the actual wire geometry.
Ensemble Monte Carlo simulation of two-dimensional electron transport is carried out for an AlGaN/GaN heterostructure channel subjected to an electric field applied in the plane of electron confinement. The envelope wavefunctions for the confined electrons are calculated using a self-consistent Poisson-Schrödinger solver. The effects of electron-gas degeneracy and hot phonons on electron energy relaxation and drift velocity are investigated. The best fit between Monte Carlo simulation and experimental results is received with optical-phonon relaxation time τ ph = 1 ps. The results of simulation show that the degeneracy reduces the electron drift velocity while the hot phonons reduce the electron drift velocity and increase the electron energy relaxation time. Electron energy relaxation time approaches 0.3 ps at 10 kV cm −1 at room temperature.
A model of impact ionization due to the primary hole in silicon for a full band Monte Carlo simulation Plasma density distribution of the FFTB plasma lens calculated by direct simulation MonteCarlo method AIP Conf.
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