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Vertically coupled quantum dots in the local spin-density functional theory

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We have investigated the structure of double quantum dots vertically coupled at zero magnetic field within local-spin-density functional theory. The dots are identical and have a finite width, and the whole system is axially symmetric. We first discuss the effect of thickness on the addition spectrum of one single dot. Next we describe the structure of coupled dots as a function of the interdot distance for different electron numbers. Addition spectra, Hund's rule, and molecular-type configurations are discussed. It is shown that self-interaction corrections to the density-functional results do not play a very important role in the calculated addition spectra

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/110.1103/PhysRevB.63.115316

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Transformacions de fase (Física estadística)

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Vertically coupled quantum dots in the local spin-density functional theory