Effects of Varying Curvature and Width on the Electronic States of GaAs Quantum Rings
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Sociedade Brasileira de Física
2006
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876483111508770816 |
|---|---|
| author | A. Bruno-Alfonso |
| author_facet | A. Bruno-Alfonso |
| contents | Effects of Varying Curvature and Width on the Electronic States of GaAs Quantum Rings A. Bruno-Alfonso T. A. de Oliveira Física, Astronomía y Matemáticas Effective Electronic states mass approximation GaAs elliptical quantum rings Stationary states of an electron in thin GaAs elliptical quantum rings are calculated within the effective-massapproximation. The width of the ring varies smoothly along the centerline, which is an ellipse. The solutions ofthe Schr¨odinger equation with Dirichlet boundary conditions are approximated by a product of longitudinal andtransversal wave functions. The ground-state probability density shows peaks: (i) where the curvature is largerin a constant-with ring, and (ii) in thicker parts of a circular ring. For rings of typical dimensions, it is shownthat the effects of a varying width may be stronger than those of the varying curvature. Also, a width profilewhich compensates the main localization effects of the varying curvature is obtained. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436354 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.36 |
| format | Artículo científico |
| id | redalyc_46436354 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Effects of Varying Curvature and Width on the Electronic States of GaAs Quantum Rings A. Bruno-Alfonso Física, Astronomía y Matemáticas Effective Electronic states mass approximation GaAs elliptical quantum rings Effects of Varying Curvature and Width on the Electronic States of GaAs Quantum Rings A. Bruno-Alfonso T. A. de Oliveira Física, Astronomía y Matemáticas Effective Electronic states mass approximation GaAs elliptical quantum rings Stationary states of an electron in thin GaAs elliptical quantum rings are calculated within the effective-massapproximation. The width of the ring varies smoothly along the centerline, which is an ellipse. The solutions ofthe Schr¨odinger equation with Dirichlet boundary conditions are approximated by a product of longitudinal andtransversal wave functions. The ground-state probability density shows peaks: (i) where the curvature is largerin a constant-with ring, and (ii) in thicker parts of a circular ring. For rings of typical dimensions, it is shownthat the effects of a varying width may be stronger than those of the varying curvature. Also, a width profilewhich compensates the main localization effects of the varying curvature is obtained. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436354 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.36 |
| title | Effects of Varying Curvature and Width on the Electronic States of GaAs Quantum Rings |
| topic | Física, Astronomía y Matemáticas Effective Electronic states mass approximation GaAs elliptical quantum rings |
| url | https://www.redalyc.org/articulo.oa?id=46436354 |