Microscopic theory for the valence intersubband absorption of quantum wells
M.F. Pereiraa and H. Wenzelb
Published in:
Microelectron. Eng., vol. 81, no. 2-4, pp. 510-513 (2005).
Abstract:
In this paper we focus on the temperature dependence and on a detailed analysis of the interplay between Coulomb effects at Hartree-Fock level,namely:subband shifts,exchange and depolarization shifts to the valence intersubband absorption of III-V semiconductor quantum wells. We show how the tendency of the depolarization to create double peaks in the absorption spectra in the presence of a strongly k-space localized dipole moment can be partially compensated by the other Coulomb corrections considered.
a Tyndall National Insitute, Lee Maltings, Prospect Row, Cork, Ireland
b Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
Keywords:
Quantum cascade lasers; Many body effects; Intersubband transitions
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