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Spectra of Hydrogenic Donor States in Quantum-Dot Quantum Well Structures |
| LUO Ying1;XIE Hong-jing1;MA Ben-kun1;LI Jia-qiang2;ZHU Jia-lin2,3 |
| 1Department of Physics, Beijing Normal University, Beijing 100875
2Department of Physics, Tsinghua University, Beijing 100084
3Center of Theoretical Physics, Chinese Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing 100080
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| Cite this article: |
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LUO Ying, XIE Hong-jing, MA Ben-kun et al 1999 Chin. Phys. Lett. 16 680-682 |
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Abstract The series expansion approach has been employed to calculate the exact energy spectra of hydrogenic donor states in a quantum-dot quantum well(QDQW). The result shows that the hydrogenic donor energy levels are very different from those in a quantum dot. In a QDQW, the donor energy levels depend on not only the radius of core and the barrier, but also the numbers of small wells. When there exist two small wells outside the core, the “band gap”exists between donor levels, and its width depends on the depth of the small wells.
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| Keywords:
73.20.Dx
71.55.Eq
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Published: 01 September 1999
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