Original scientific paper
Polar interface optical oscillation and Fröhlich electron-phonon interaction Hamiltonians in a n-layer coupling quantum well
Li Zhang
; Department of Mechanism and Electron, Panyu Polytechnic, Panyu 511483, P. R. China
Hong-Jing Xie
; Department of Physics, Guihuagang Campus, Guangzhou University, Guangzhou 510405, P. R. China
Abstract
Under dielectric continuum approximation and by using determinant method, the interface optical (IO) phonon modes, the orthogonal relation for polarization vector and electron - IO phonon Fröhlich interaction Hamiltonian in a n-layer coupling quantum well have been derived. Numerical calculations on seven-layer AlxGa1-xAs/GaAs systems have been performed. The IO phonon dispersion relation and the electron - IO phonon coupling function are discussed. Based on the numerical results in this and previous work, general characteristics of the IO phonon modes in a n-layer coupling quantum well system are deduced. The present investigations can be regarded as a generalization of previous studies.
Keywords
multi-layer coupling quantum well; seven-layer AlxGa1-xAs/GaAs systems; interface optical phonon modes and dispersion relation
Hrčak ID:
301634
URI
Publication date:
1.3.2003.
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