Valence Band Structure of Coupled Diluted Magnetic Quantum Dots
| Autor: | Rene F. K. Spada, Fanyao Qu, L. Villegas-Lelovsky, L. O. Massa |
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| Rok vydání: | 2009 |
| Předmět: |
Physics
Condensed matter physics Spins Exchange interaction Magnetic semiconductor Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Effective mass (solid-state physics) Quantum dot Quantum coupling Electronic band structure Ground state |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 23:121-125 |
| ISSN: | 1557-1947 1557-1939 |
| Popis: | The valence band structure of double InAs/GaAs diluted magnetic vertical quantum dots has been studied in the frame of multiband k⋅p calculation. We find that due to anisotropic effective mass, the ground state can be tuned from the characteristic of heavy- to light-hole state through just changing the parameter of quantum coupling between two QDs. We also show how this crossover manifests itself in the p–d exchange interaction between hole and Mn spins. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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