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Exciton-mott physics in a quasi-one-dimensional electron-hole system.
MedLine Citation:
PMID:  22243096     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We investigate the correlation effect in the quasi-one-dimensional electron-hole (e-h) system under thermal equilibrium. A self-consistent screened T-matrix approximation developed here enables the description of an e-h pair under any ionization ratio, the portion of quasielectrons or quasiholes moving almost freely. Our phase diagram on the ionization ratio provides a unified description of exciton Mott physics from the low-density exciton gas towards the high-density electron-hole plasma, and predicts a first order transition at low temperature. The interband optical absorption-gain spectra are also evaluated, which succeeded in explaining semiquantitatively all aspects of the recent experimental observations in the strongly photoexcited quantum wires.
Authors:
Takuya Yoshioka; Kenichi Asano
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Publication Detail:
Type:  Journal Article     Date:  2011-12-16
Journal Detail:
Title:  Physical review letters     Volume:  107     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2012-01-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  256403     Citation Subset:  IM    
Affiliation:
Department of Physics, Osaka University, Toyonaka, Osaka, 560-0043, Japan.
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