Publicação: Effects of varying curvature and width on the electronic states of GaAs quantum rings
Carregando...
Data
Autores
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Física
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
Stationary states of an electron in thin GaAs elliptical quantum rings are calculated within the effective-mass approximation. The width of the ring varies smoothly along the centerline, which is an ellipse. The solutions of the Schrödinger equation with Dirichlet boundary conditions are approximated by a product of longitudinal and transversal wave functions. The ground-state probability density shows peaks: (i) where the curvature is larger in a constant-with ring, and (ii) in thicker parts of a circular ring. For rings of typical dimensions, it is shown that the effects of a varying width may be stronger than those of the varying curvature. Also, a width profile which compensates the main localization effects of the varying curvature is obtained.
Descrição
Palavras-chave
Electronic states, GaAs elliptical quantum rings, Effective-mass approximation
Idioma
Inglês
Como citar
Brazilian Journal of Physics. Sociedade Brasileira de Física, v. 36, n. 2a, p. 434-437, 2006.
