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Scattering of Excitons by Phonons in Quantum Wells

100%
Bardyszewski W., Prywata M.
Acta Physica Polonica A
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1996
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vol. 90
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issue 4
715-718
EN
A method to describe the effects of the exciton-optical phonon interaction is presented using the cumulant expansion approximation. The functional-integral technique of coherent phonon states is used in order to justify the commonly used model Hamiltonian and generate the proper perturbation series. The influence of the mutual electron-hole screening on the polaronic effects in quantum wells is analyzed.
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Polaron Problem in Quantum Wells

100%
Bardyszewski W., Prywata M.
Acta Physica Polonica A
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1995
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vol. 88
|
issue 5
969-973
EN
The effect of polar interaction between an electron in a quantum well and bulk longitudinal optical phonons is analysed. Electron spectral density function is calculated in the lowest order cumulant approximation. The position and linewidth of the quasiparticle peak are obtained as a function of quantum well width and temperature.
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