Electron transfer between weakly coupled concentric quantum rings
| Autor: | J. Nimmo, Branislav Vlahovic, Igor Filikhin, S. G. Matinyan |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Physics
Quantum Physics Electron density Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics FOS: Physical sciences Electronic structure Electron Condensed Matter Physics Quantum number Molecular physics Atomic and Molecular Physics and Optics Electron localization function Electronic Optical and Magnetic Materials Electron transfer Effective mass (solid-state physics) Atomic electron transition Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Quantum Physics (quant-ph) |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 43:1669-1676 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2011.05.020 |
| Popis: | The electronic structure of the semiconductor double concentric quantum nano-ring (DCQR) is studied under the single sub-band effective mass approach. We show that in the weakly coupled DCQR, that has been placed in transverse magnetic field, the electron spatial transition between the rings can occur due to electron level anti-crossing. The anti-crossing of the levels with different radial quantum numbers provides the conditions when the electron tunneling between rings becomes possible. Results of numerical simulation for the electron transition are presented for DCQRs of different geometry. In particularly, the system of a QR with a QD located at center of this QR is considered. 20 pages, 18 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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