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https://repositorio.ufba.br/handle/ri/14654
metadata.dc.type: | Artigo de Periódico |
Título : | The violation of the Hund rule in semiconductor artificial atoms |
Otros títulos : | Semiconductor Science and Technology |
Autor : | Vianna, J. D. M. Destefani, C. F. Marques, G. E. |
metadata.dc.creator: | Vianna, J. D. M. Destefani, C. F. Marques, G. E. |
Resumen : | The unrestricted Pople–Nesbet approach for real atoms is adapted to quantum dots under applied magnetic field. Gaussian basis sets are used instead of the exact single-particle orbitals in the construction of the appropriated Slater determinants. Both system chemical potential and charging energy are calculated, as well as the expected values for total spin and its z-component. We have verified the validity of the energy shell structure as well as the Hund rule for state population at zero magnetic field. Above given fields, we have observed a violation of the Hund rule by the suppression of triplet and quartet states at the 1p-energy shell, taken as an example. We have also compared our present results with those obtained by using the LS-coupling scheme for low electronic occupations. We have focused our attention on ground-state properties of GaAs quantum dots populated up to 40 electrons. |
metadata.dc.rights: | Acesso Aberto |
URI : | http://repositorio.ufba.br/ri/handle/ri/14654 |
Fecha de publicación : | 2004 |
Aparece en las colecciones: | Artigo Publicado em Periódico (FIS) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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J D M Vianna.pdf | 289,52 kB | Adobe PDF | Visualizar/Abrir |
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