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Linear optical responses of one-dimensional electron systems: Comparison of theories with experiments

โœ Scribed by Tetsuo Ogawa; Ping Huai; Mutsuki Takagiwa; Kenichi Asano; Toshiyuki Ihara; Masahiro Yoshita; Hidefumi Akiyama


Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
241 KB
Volume
40
Category
Article
ISSN
1386-9477

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โœฆ Synopsis


We present a systematic study on the linear optical spectra of n-doped GaAs quantum wire. A Coulomb-correlated band-edge absorption peak appears at low doping density evolving from the exciton resonance. The Fermi-edge singularity is observed at high doping density. Based on theoretical calculations, we clarify the mechanism of the crossover among exciton, the band-edge and the Fermi-edge singularities.


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