منابع مشابه
optimization of electron raman scattering in double rectangular quantum wells
in this work, by using the particle swarm optimization the electron raman scattering for square double quantum wells is optimized. for this purpose, by combining the particle swarm algorithm together with the numerical solution procedures for equations, and also the perturbation theory we find the optimal structure that maximizes the electron raman scattering. application of this algorithm to t...
متن کاملOptimizing terahertz emission from double quantum wells
The terahertz (THz) radiation emitted from a double quantum well is investigated and optimized. Exploiting the phenomenon of quantum stochastic resonance (whereby the oscillation amplitude of a dissipative two-level system exhibits at low temperatures a non-monotonic response with respect to the parameters of a monochromatic external field or the strength of dissipation) to drive a series of id...
متن کاملPhotoluminescence of tetrahedral quantum-dot quantum wells.
Taking into account the tetrahedral shape of a quantum-dot quantum well (QDQW) when describing excitonic states, phonon modes, and the exciton-phonon interaction in the structure, we obtain within a nonadiabatic approach a quantitative interpretation of the photoluminescence spectrum of a single CdS/HgS/CdS QDQW. We find that the exciton ground state in a tetrahedral QDQW is bright, in contrast...
متن کاملOptical Physics of Quantum Wells
Quantum wells are thin layered semiconductor structures in which we can observe and control many quantum mechanical effects. They derive most of their special properties from the quantum confinement of charge carriers (electrons and "holes") in thin layers (e.g 40 atomic layers thick) of one semiconductor "well" material sandwiched between other semiconductor "barrier" layers. They can be made ...
متن کامل12xMg xTe single quantum wells
We report resonant spin-flip Raman scattering measurements in CdTe/Cd12xMg xTe single quantum wells with x50.15, 0.26, and 0.5 as well as in Cd12xMg xTe alloys with x50, 0.15, and 0.5. Effective g factors of electrons and heavy holes are measured as a function of the quantum well width (182100 Å! and the angle of the magnetic field with respect to the growth axis. The electron g factors in quan...
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ژورنال
عنوان ژورنال: World Journal of Condensed Matter Physics
سال: 2014
ISSN: 2160-6919,2160-6927
DOI: 10.4236/wjcmp.2014.41004