Journal ArticleDOI
Optical response of a quantum dot superlattice under electric and magnetic fields
Monica Pacheco,Z. Barticevic +1 more
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TLDR
In this article, the optical absorption of excitonic states in a linear array of quantum dots in the presence of electric and magnetic fields aligned with the array axis was investigated and the results for a large range of external field values and for different geometric confinement regimes were obtained.Abstract:
We report calculations of the optical absorption of excitonic states in a linear array of quantum dots in the presence of electric and magnetic fields aligned with the array axis. In this system, in addition to the quantum dot geometric confinement and the Stark confinement, it is also present the confinement induced by the magnetic field that modifies the lateral characteristic energies of the system. The competing action between the effects of the electron-hole correlation and the different mechanisms of quantum confinement produces a rich structure in the spectrum. We show results for a large range of external field values and for different geometric confinement regimes.read more
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Effects of applied magnetic fields and hydrostatic pressure on the optical transitions in self-assembled InAs/GaAs quantum dots
TL;DR: A theoretical study of the photoluminescence peak energies in InAs self-assembled quantum dots embedded in a GaAs matrix in the presence of magnetic fields applied perpendicular to the sample plane finds results in quite good agreement with available experimental measurements.
Journal ArticleDOI
Effect of laser radiation on optical properties of disk shaped quantum dot in magnetic fields
Vinod Prasad,Poonam Silotia +1 more
TL;DR: In this article, the optical absorption coefficients and changes in the refractive index in GaAs/AlGaAs, disk shaped quantum dots (DSQD) with simultaneously applied laser and magnetic field are studied in detail.
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Electron-hole transitions in self-assembled InAs/GaAs quantum dots: Effects of applied magnetic fields and hydrostatic pressure
TL;DR: Present theoretical results are in quite good agreement with experimental measurements of the magnetic field and pressure dependence of the exciton transition energies in InAs/GaAs self-assembled quantum dots.
Journal ArticleDOI
Advances in the theory of electronic structure of semiconductors
TL;DR: In this paper, the present status of recently developed ab-initio as well as semi-empirical electronic structure methods that are particularly suited for semiconductors and mesoscopic semiconductor structures is reviewed.
Journal ArticleDOI
Quantum-confined hydrogenic impurity in a spherical quantum dot under the influence of parallel electric and magnetic fields
TL;DR: In this article, the authors studied the influence of magnetic field on the quantum-confined Stark effect and showed that with increasing magnetic field, resonances shift to higher level and the width gets narrower with less impact on the oscillation amplitude.