Effect of magnetic field and impurities in InAs/GaAs and GaN/AlN self-assembled quantum dots



Título del documento: Effect of magnetic field and impurities in InAs/GaAs and GaN/AlN self-assembled quantum dots
Revista: Revista mexicana de física
Base de datos: PERIÓDICA
Número de sistema: 000438806
ISSN: 0035-001X
Autors: 1
1
Institucions: 1Benemérita Universidad Autónoma de Puebla, Instituto de Física, Puebla. México
Any:
Període: May-Jun
Volum: 65
Número: 3
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, teórico
Resumen en inglés A theoretical study on the effect of a magnetic field or impurities on the carrier states of self-assembled quantum dots is presented. The magnetic field is applied along the growth direction of the dots and for comparison two systems are considered; InAs embedded in GaAs and GaN in AlN. The electronic states and energy are calculated in the framework of the k ⋅ p theory in 8 bands including the strain and piezoelectric effects. Zeeman splitting and anticrossings are observed in InAs/GaAs, while the field introduces small changes in the nitrides. It is also included a study about hidrogen-like impurities, which may be negative or positive. It is noted that, depending on the type of impurity, the energy of carriers is changed and the distribution of the probability density of the carriers is affected too
Disciplines Física y astronomía
Paraules clau: Electromagnetismo,
Puntos cuánticos,
Estados electrónicos,
Impurezas,
Campo magnético
Keyword: Electromagnetism,
Quantum dots,
Electronic states,
Impurities,
Magnetic field
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