Electronic states of on- and off-center donors in quantum rings of finite width
The electronic states of a hydrogenic donor in two-dimensional quantum rings are calculated by taking into account the finite width of the potential well in the ring. In addition, a strong magnetic field is applied perpendicular to the quantum ring. Using the effective-mass approximation at the G va...
| Autores: | ; |
|---|---|
| Tipo de documento: | Artigo |
| Data de publicação: | 2008 |
| País: | España |
| Recursos: | Universidad de Castilla-La Mancha |
| Repositório: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/41193 |
| Acesso em linha: | https://publons.com/wos-op/publon/7354806/ https://hdl.handle.net/10578/41193 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | Electronic states Impurity and defect levels Quantum rings |
| _version_ | 1878729643341643776 |
|---|---|
| author | de Paula Almeida Lima, Rodrigo |
| author2 | Amado, Mario |
| author2_role | author |
| author_browse | Amado, Mario de Paula Almeida Lima, Rodrigo |
| author_facet | de Paula Almeida Lima, Rodrigo Amado, Mario |
| author_role | author |
| collection | RUIdeRA. Repositorio Institucional de la UCLM |
| description | The electronic states of a hydrogenic donor in two-dimensional quantum rings are calculated by taking into account the finite width of the potential well in the ring. In addition, a strong magnetic field is applied perpendicular to the quantum ring. Using the effective-mass approximation at the G valley, the radial Hamiltonian for the envelope-function is exactly diagonalized in the case of on-center donors. The corresponding energy levels for different angular momenta are studied as a function of the applied magnetic field. In the case of off-center donors, a perturbation approach is considered and its limitations are discussed. Finally, we calculate the absorption spectra and oscillator strength for different intraband transitions, specifically for on-center donors. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_0c05db9a5effcd4e313a3cdadd2d4aa8 |
| institution | Universidad de Castilla-La Mancha |
| instname_str | Universidad de Castilla-La Mancha |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:ruidera.uclm.es:10578/41193 |
| publishDate | 2008 |
| publishDateSort | 2008 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | RUIdeRA. Repositorio Institucional de la UCLM |
| spelling | Electronic states of on- and off-center donors in quantum rings of finite width de Paula Almeida Lima, Rodrigo Amado, Mario Electronic states Impurity and defect levels Quantum rings The electronic states of a hydrogenic donor in two-dimensional quantum rings are calculated by taking into account the finite width of the potential well in the ring. In addition, a strong magnetic field is applied perpendicular to the quantum ring. Using the effective-mass approximation at the G valley, the radial Hamiltonian for the envelope-function is exactly diagonalized in the case of on-center donors. The corresponding energy levels for different angular momenta are studied as a function of the applied magnetic field. In the case of off-center donors, a perturbation approach is considered and its limitations are discussed. Finally, we calculate the absorption spectra and oscillator strength for different intraband transitions, specifically for on-center donors. Elsevier https://publons.com/wos-op/publon/7354806/ https://hdl.handle.net/10578/41193 |
| spellingShingle | Electronic states of on- and off-center donors in quantum rings of finite width de Paula Almeida Lima, Rodrigo Electronic states Impurity and defect levels Quantum rings |
| title | Electronic states of on- and off-center donors in quantum rings of finite width |
| title_full | Electronic states of on- and off-center donors in quantum rings of finite width |
| title_fullStr | Electronic states of on- and off-center donors in quantum rings of finite width |
| title_full_unstemmed | Electronic states of on- and off-center donors in quantum rings of finite width |
| title_short | Electronic states of on- and off-center donors in quantum rings of finite width |
| title_sort | Electronic states of on- and off-center donors in quantum rings of finite width |
| topic | Electronic states Impurity and defect levels Quantum rings |
| topic_facet | Electronic states Impurity and defect levels Quantum rings |
| url | https://publons.com/wos-op/publon/7354806/ https://hdl.handle.net/10578/41193 |