Chinese Journal of Quantum Electronics, Volume. 31, Issue 6, 753(2014)

Effect of phonon dispersion on magnetopolaron in a polar crystal

Wen-hui JI*, Hong-tao YANG, and Wen-tao HU
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    The influence of phonon dispersion on properties of the magnetopolaron in a polar crystal was studied by using the linear combination operator and unitary transformation method. Taking account of the longitudinal optical (LO) phonon dispersion in a parabolic approximation, the ground state energy, self-trapping energy and ground state Landau energy of the magnetopolaron in a polar crystal as a function of coefficient of the phonon dispersion, cyclotron resonance frequency and electron-LO-phonon coupling constant were obtained. Numerical calculation results show that the ground state energy decreases with increasing the coefficient of the phonon dispersion and electron-LO-phonon coupling constant. The self-trapping energy increases with increasing the coefficient of phonon dispersion and the electron-LO-phonon coupling constant. The ground state Landau energy increases to a maximum and then fall with increasing the electron-LO-phonon coupling constant, and increases with increasing the coefficient of phonon dispersion.

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    JI Wen-hui, YANG Hong-tao, HU Wen-tao. Effect of phonon dispersion on magnetopolaron in a polar crystal[J]. Chinese Journal of Quantum Electronics, 2014, 31(6): 753

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    Paper Information

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    Received: Jun. 3, 2014

    Accepted: --

    Published Online: Dec. 26, 2014

    The Author Email: Wen-hui JI (jiwenhui2000@aliyun.com)

    DOI:10.3969/j.issn.1007-5461.2014.06.018

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