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Energy of a Polaron in a Wurtzite Nitride Finite Parabolic Quantum Well |
| ZHAO Feng-Qi 1;GONG Jian 2,3 |
| 1College of Physics and Electron Information, Inner Mongolia Normal University, Hohhot 0100222State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 1000833Department of Physics, Inner Mongolia University, Huhhot 010021 |
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| Cite this article: |
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ZHAO Feng-Qi, GONG Jian 2007 Chin. Phys. Lett. 24 1327-1330 |
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Abstract The effects of electron--phonon interaction on energy levels of a polaron in
a wurtzite nitride finite parabolic quantum well (PQW) are studied by using a modified Lee--Low--Pines variational method. The ground state, first excited state, and transition energy of the polaron in the GaN/Al 0.3 Ga 0.7 N wurtzite PQW are calculated by taking account of the influence of confined LO(TO)-like phonon modes and the half-space LO(TO)-like phonon modes and considering the anisotropy of all kinds of phonon modes. The numerical results are given and discussed. The results show that the electron--phonon interaction strongly affects the energy levels of the polaron, and the contributions from phonons to the energy of a polaron in a wurtzite nitride PQW are greater than that in an AlGaAs PQW. This indicates that the electron--phonon interaction in a wurtzite nitride PQW is not negligible.
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| Keywords:
63.20.Kr
71.38.-k
73.21.Fg
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Received: 09 October 2007
Published: 23 April 2007
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