Properties of a polaron in a quantum dot：a squeezed-state variational approach
The ground-state energy and the average number of virtual phonons around the electron in a parabolic quantum dot for the entire range of the electron-phonon coupling constant are obtained using the single-mode squeezed-state variational approach.The variational approach we applied is based on two su...
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| Veröffentlicht in: | Journal of semiconductors 2013, Vol.34 (1), p.1-5 |
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| container_title | Journal of semiconductors |
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| creator | Yin, Jiwen Li, Weiping Yu, Yifu |
| description | The ground-state energy and the average number of virtual phonons around the electron in a parabolic quantum dot for the entire range of the electron-phonon coupling constant are obtained using the single-mode squeezed-state variational approach.The variational approach we applied is based on two successive canonical transformations and using a displaced-oscillator type unitary transformation to deal with the bilinear terms which are usually neglected.In order to study the relationship between the ground-state energy and the average number of virtual phonons around the electron of a polaron in a parabolic quantum dot with the electron-LO-phonon coupling constant and the confinement length,numerical calculations are carried out in the electron-LO-phonon strong-and weak-coupling regions. |
| doi_str_mv | 10.1088/1674-4926/34/1/012001 |
| format | Article |
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| ispartof | Journal of semiconductors, 2013, Vol.34 (1), p.1-5 |
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| language | eng |
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| source | Institute of Physics Journals; Alma/SFX Local Collection |
| subjects | Confinement Joining LO声子 Mathematical analysis Phonons Polarons Quantum dots Semiconductors Transformations 变分方法 基态能量 抛物量子点 挤压 极化子 状态 耦合常数 |
| title | Properties of a polaron in a quantum dot：a squeezed-state variational approach |
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