Molecular states of laterally coupled quantum dots under electric fields
The states of a single electron trapped in two laterally coupled quantum dots are studied theoretically in the framework of the effective mass and envelope function approximations. The electron tunneling between dots is studied by varying of inter-dot distance and we showed that the lateral quantu...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Universidad de Antioquia
2014-02-01
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| Series: | Revista Facultad de Ingeniería Universidad de Antioquia |
| Subjects: | |
| Online Access: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/15984 |
| _version_ | 1797861731858382848 |
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| author | Carlos Teofilo Corredor Willian Gutiérrez |
| author_facet | Carlos Teofilo Corredor Willian Gutiérrez |
| author_sort | Carlos Teofilo Corredor |
| collection | DOAJ |
| description |
The states of a single electron trapped in two laterally coupled quantum dots are studied theoretically in the framework of the effective mass and envelope function approximations. The electron tunneling between dots is studied by varying of inter-dot distance and we showed that the lateral quantum coupling between them allows the formation of molecular-like states, which exhibit similar characteristics to those of a molecule H2+. The effect of an in-plane electric field on the energy spectrum is analyzed and our results reveal that the wavelength of photons emitted from the system can be tuned by simply applying a low-intensity electric field. This latter feature is consistent with experimental observations.
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| first_indexed | 2024-04-09T22:08:56Z |
| format | Article |
| id | doaj.art-fe164c92151b4d19842738d581f7893b |
| institution | Directory Open Access Journal |
| issn | 0120-6230 2422-2844 |
| language | English |
| last_indexed | 2024-04-09T22:08:56Z |
| publishDate | 2014-02-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Facultad de Ingeniería Universidad de Antioquia |
| spelling | doaj.art-fe164c92151b4d19842738d581f7893b2023-03-23T12:33:06ZengUniversidad de AntioquiaRevista Facultad de Ingeniería Universidad de Antioquia0120-62302422-28442014-02-01717110.17533/udea.redin.15984Molecular states of laterally coupled quantum dots under electric fieldsCarlos Teofilo Corredor0Willian Gutiérrez1Industrial University of SantanderIndustrial University of Santander The states of a single electron trapped in two laterally coupled quantum dots are studied theoretically in the framework of the effective mass and envelope function approximations. The electron tunneling between dots is studied by varying of inter-dot distance and we showed that the lateral quantum coupling between them allows the formation of molecular-like states, which exhibit similar characteristics to those of a molecule H2+. The effect of an in-plane electric field on the energy spectrum is analyzed and our results reveal that the wavelength of photons emitted from the system can be tuned by simply applying a low-intensity electric field. This latter feature is consistent with experimental observations. https://revistas.udea.edu.co/index.php/ingenieria/article/view/15984artificial molecule two laterally coupled quantum dots one electron energy spectrummolecular stateswavelength-tunable single-photon emitter |
| spellingShingle | Carlos Teofilo Corredor Willian Gutiérrez Molecular states of laterally coupled quantum dots under electric fields Revista Facultad de Ingeniería Universidad de Antioquia artificial molecule two laterally coupled quantum dots one electron energy spectrum molecular states wavelength-tunable single-photon emitter |
| title | Molecular states of laterally coupled quantum dots under electric fields |
| title_full | Molecular states of laterally coupled quantum dots under electric fields |
| title_fullStr | Molecular states of laterally coupled quantum dots under electric fields |
| title_full_unstemmed | Molecular states of laterally coupled quantum dots under electric fields |
| title_short | Molecular states of laterally coupled quantum dots under electric fields |
| title_sort | molecular states of laterally coupled quantum dots under electric fields |
| topic | artificial molecule two laterally coupled quantum dots one electron energy spectrum molecular states wavelength-tunable single-photon emitter |
| url | https://revistas.udea.edu.co/index.php/ingenieria/article/view/15984 |
| work_keys_str_mv | AT carlosteofilocorredor molecularstatesoflaterallycoupledquantumdotsunderelectricfields AT williangutierrez molecularstatesoflaterallycoupledquantumdotsunderelectricfields |