| Energy of a Polaron in a Wurtzite Nitride Finite Parabolic Quantum Well |
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| 作者姓名： | 赵凤岐 宫箭 |
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| 作者单位： | [1]College of Physics and Electron Information, Inner Mongolia Normal University, Hohhot 010022 [2]State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083 [3]Department of Physics, Inner Mongolia University, Huhhot 010021 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10364003. |
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| 摘 要： | 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/Al0.3Ga0.7N wurtzite PQW are calculated by taking account of the influence of confined LO（TO）-like phonon modes and the half-spaee 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 A1GaAs PQW. This indicates that ehe electron-phonon interaction in a wurtzite nitride PQW is not negligible.
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| 关 键 词： | 量子论 抛物线方程 极化子 氮化物 |
| 收稿时间： | 2007-10-9 |
| 修稿时间： | 2007-10-09 |
Energy of a Polaron in a Wurtzite Nitride Finite Parabolic Quantum Well |
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| ZHAO Feng-Qi,GONG Jian.Energy of a Polaron in a Wurtzite Nitride Finite Parabolic Quantum Well[J].Chinese Physics Letters,2007,24(5):1327-1330. |
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| Authors: | ZHAO Feng-Qi GONG Jian |
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| Affiliation: | 1College of Physics and Electron Information, Inner Mongolia Normal University, Hohhot 010022; 2State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083 ; 3 Department of Physics, Inner Mongolia University, Huhhot 010021 |
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| Abstract: | The effects of electron--phonon interaction on energy levels of a polaron ina 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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