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Optical Response of a Spherically Confined Exciton with the Effects of e–h Exchange and Image Charge Density
Author(s) -
Cho K.,
Ajiki H.,
Tsuji T.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(200104)224:3<735::aid-pssb735>3.0.co;2-d
Subject(s) - exciton , physics , transverse plane , polarization (electrochemistry) , radiative transfer , electron , condensed matter physics , atomic physics , optics , quantum mechanics , chemistry , structural engineering , engineering
A thorough theoretical study has been made on the optical response of an exciton weakly confined in a sphere over a wide range of size, based on the previous work on the exciton level scheme which takes account of electron–hole (e–h) exchange interaction, size quantized center‐of‐mass (CM) motion, and the effect of background polarization. In the presence of transverse EM field, the cross section of elastically scattered light has been calculated according to a modified microscopic nonlocal response theory. The results allow us a systematic understanding of resonant spectral structure in a wide range of sample size, in relation with the corresponding level scheme, radiative shift and width, and the longitudinal and transverse character of each exciton level.