Abstract

The ground-state transition rate of polaron with strong electron-LO-phonon coupling was investigated by employing a Pekar’ type variational method in a quantum rod (QR). Quantum transition was occurred in the low dimensional quantum system due to the electron–phonon interaction and the effect of temperature. It was found the polaron can transit from the ground-state to the first-excited state after absorbing a LO-phonon. And the ground-state transition rate of polaron increases with enlarging the transverse and longitudinal confinement lengths of QR and decreases with the increasing of the ground-state energy of polaron. In addition, the ground-state transition rate of polaron is an increasing function of the electron–phonon coupling constant and temperature.

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