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Magnetpolaron effect in two-dimensional anisotropic parabolic quantum dot in a perpendicular magnetic field |
| Kang-Kang Ju(居康康), CuiXian Guo(郭翠仙), Xiao-Yin Pan(潘孝胤) |
| Department of Physics, Ningbo University, Ningbo 315211, China |
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Abstract We study the two-dimensional weak-coupling Fröhlich polaron in a completely anisotropic quantum dot in a perpendicular magnetic field. By performing a unitary transformation, we first transform the Hamiltonian into a new one which describes an anisotropic harmonic oscillator with new mass and trapping frequencies interacting with the same phonon bath but with different interaction form and strength. Then employing the second-order Rayleigh-Schrödinger perturbation theory, we obtain the polaron correction to the ground-state energy. The magnetic field and anisotropic effects on the polaron correction to the ground-state energy are discussed.
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Received: 03 May 2017
Revised: 06 June 2017
Accepted manuscript online:
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PACS:
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71.38.-k
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(Polarons and electron-phonon interactions)
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71.38.Fp
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(Large or Fr?hlich polarons)
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63.20.K-
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(Phonon interactions)
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73.21.La
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(Quantum dots)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11375090) and the K. C. Wong Magna Foundation in Ningbo University, China. |
Corresponding Authors:
Xiao-Yin Pan
E-mail: panxiaoyin@nbu.edu.cn
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Cite this article:
Kang-Kang Ju(居康康), CuiXian Guo(郭翠仙), Xiao-Yin Pan(潘孝胤) Magnetpolaron effect in two-dimensional anisotropic parabolic quantum dot in a perpendicular magnetic field 2017 Chin. Phys. B 26 097103
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