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Many‐Body Effects in the Polariton Properties of Semiconductors
Author(s) -
Manzke G.,
Schmielau T.,
Henneberger K.
Publication year - 2001
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/1521-3986(200103)41:2/3<207::aid-ctpp207>3.0.co;2-c
Subject(s) - polariton , physics , coulomb , semiconductor , excited state , renormalization , particle (ecology) , condensed matter physics , quantum electrodynamics , quantum mechanics , electron , oceanography , geology
Many‐body effects between excited carriers are demonstrated to be responsible for the behavior of intensity and phase of the transmitted light in pulse propagation experiments. The optical response is described by a Bethe‐Salpeter equation including the renormalization of interband selfenergy and of Coulomb interaction as the two relevant many‐body effects. In contrast to previously used quasi‐particle approximations these two‐particle properties have to be taken into account in dependence on both wave number and energy to give a appropriate description of the spectral properties of excitonic polaritons. Furthermore the interplay with corresponding one‐particle properties of the carriers is discussed.