Use este identificador para citar ou linkar para este item:
https://repositorio.ufba.br/handle/ri/13765
Tipo: | Artigo de Periódico |
Título: | Restricted and unrestricted Hartree–Fock approaches applied to spherical quantum dots in a magnetic field |
Título(s) alternativo(s): | International Journal of Quantum Chemistry |
Autor(es): | Vianna, J. D. M. Destefani, C. F. MARQUES, G. E. |
Autor(es): | Vianna, J. D. M. Destefani, C. F. MARQUES, G. E. |
Abstract: | The Roothaan and Pople–Nesbet approaches for real atoms are adapted to quantum dots in the presence of a magnetic field. Single-particle Gaussian basis sets are constructed, for each dot radius, under the condition of maximum overlap with the exact functions. The chemical potential, charging energy, and total spin expected values are calculated, and we have verified the validity of the quantum dot energy shell structure as well as Hund's rule for electronic occupation at zero magnetic field. At finite field, we have observed the violation of Hund's rule and studied the influence of magnetic field on the closed and open energy shell configurations. We have also compared the present results with those obtained within the LS-coupling scheme for low electronic occupation numbers. We focus only on ground-state properties and consider quantum dots populated up to 40 electrons, constructed by GaAs or InSb nanocrystals. © 2006 Wiley Periodicals, Inc. Int J Quantum Chem, 2006. |
Palavras-chave: | Roothaan–Pople–Nesbet Hartree–Fock Quantum dots Hund's rule |
Tipo de Acesso: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/13765 |
Data do documento: | 2006 |
Aparece nas coleções: | Artigo Publicado em Periódico (FIS) |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
20984_ftp.pdf | 419,64 kB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.