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Variational Path-Integral Study on Bound Polarons in Parabolic Quantum Dots and Wires |
| CHEN Qing-Hu;WANG Zhuang-Bing;WU Fu-Li;LUO Meng-Bo;YUAN Yong-Hong;JIAO Zheng-Kuan |
| Department of Physics, Zhejiang University, Hangzhou 310027
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| Cite this article: |
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CHEN Qing-Hu, WANG Zhuang-Bing, WU Fu-Li et al 2001 Chin. Phys. Lett. 18 668-671 |
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Abstract The expression of the ground-state energy of the electron coupled simultaneously with a Coulomb potential and a longitudinal-optical phonon field in parabolic quantum dots and wires is derived within the framework of Feynman variational path integral theory. We obtain a general result with arbitrary electron-phonon coupling constant, Coulomb binding parameters, and confining potential strength, which could be used for further numerical calculation of polaron properties. Moreover, it is shown that all the previous path-integral formulae for free polarons, bound polarons, and polarons confined in parabolic quantum dots and wires can be recovered in the present formalism.
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71.38.+i
63.20.Kr
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Published: 01 May 2001
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