Spin Relaxation and g-factor Manipulation in Quantum Dots
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Física
2006
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| _version_ | 1876486653032267776 |
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| author | Carlos F. Destefani |
| author_facet | Carlos F. Destefani |
| contents | Spin Relaxation and g-factor Manipulation in Quantum Dots Carlos F. Destefani Sergio E. Ulloa Física, Astronomía y Matemáticas factor Phonon Quantum dots induced spin relaxation Phonon-induced spin relaxation rates and electron g-factor tuning of quantum dots are studied as function ofin-plane and perpendicular magnetic fields for different dot sizes. We consider Rashba and Dresselhaus spinorbitmixing in wide and narrow-gap semiconductors, and show how Zeeman sublevels can relax via piezoelectric(GaAs) and deformation (InSb) potential coupling to acoustic phonons. We find that strong confinementmay induce minima in the rates at particular values of the magnetic field (due to a magnetic field-induced cancellationof the spin-orbit effects), where spin relaxation times can reach seconds. We also report on g-factoranisotropy. We obtain good agreement with available experimental values. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436357 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_46436357 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Spin Relaxation and g-factor Manipulation in Quantum Dots Carlos F. Destefani Física, Astronomía y Matemáticas factor Phonon Quantum dots induced spin relaxation Spin Relaxation and g-factor Manipulation in Quantum Dots Carlos F. Destefani Sergio E. Ulloa Física, Astronomía y Matemáticas factor Phonon Quantum dots induced spin relaxation Phonon-induced spin relaxation rates and electron g-factor tuning of quantum dots are studied as function ofin-plane and perpendicular magnetic fields for different dot sizes. We consider Rashba and Dresselhaus spinorbitmixing in wide and narrow-gap semiconductors, and show how Zeeman sublevels can relax via piezoelectric(GaAs) and deformation (InSb) potential coupling to acoustic phonons. We find that strong confinementmay induce minima in the rates at particular values of the magnetic field (due to a magnetic field-induced cancellationof the spin-orbit effects), where spin relaxation times can reach seconds. We also report on g-factoranisotropy. We obtain good agreement with available experimental values. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436357 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 | Spin Relaxation and g-factor Manipulation in Quantum Dots |
| topic | Física, Astronomía y Matemáticas factor Phonon Quantum dots induced spin relaxation |
| url | https://www.redalyc.org/articulo.oa?id=46436357 |