Acta Optica Sinica, Volume. 31, Issue 8, 827001(2011)
Temperature Dependence of Effective Mass of Weak-Coupling Polaron in a Quantum Rod
The influences of temperature on the effective mass of the weak-coupling polaron in an asymmetric parabolic quantum rod are studied based on Tokuda-Lee-Low-Pines variational method. The change law of the effective mass m* of the weak-coupling polarons with the aspect ratio e′ of the quantum rod, the electron-phonon coupling strength α and the temperature parameter γ are derived. Numerical results indicate that the horizontal effective mass m*‖ and the vertical effective mass mz of the weak-coupling polaron in quantum rod will increase with the increase of the electron-phonon coupling strength α, and decrease with the increase of temperature T. The horizontal effective mass m*‖ of the polaron will increase with the increase of the aspect ratio e′ of the quantum rod. On the contrary, the vertical effective mass mz of the polaron will decrease with the increase of the aspect ratio e′.
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Eerdunchaolu, Wuyunqimuge, Han Chao. Temperature Dependence of Effective Mass of Weak-Coupling Polaron in a Quantum Rod[J]. Acta Optica Sinica, 2011, 31(8): 827001
Category: Quantum Optics
Received: Feb. 25, 2011
Accepted: --
Published Online: Jul. 19, 2011
The Author Email: Eerdunchaolu (eerdunchaolu@sohu.com)