Document Detail

Exciton and biexciton fine structure in single elongated islands grown on a vicinal surface
MedLine Citation:
PMID:  10991299     Owner:  NLM     Status:  Publisher    
We report a microphotoluminescence study of the exciton and the biexciton localized in very elongated islands formed by well-width fluctuations in a thin CdTe/CdMgTe quantum well grown on a vicinal surface. The electron-hole exchange interaction in a local reduced symmetry splits the exciton states. The resulting transitions are linearly polarized along the two orthogonal principal axes of the island. The valence band mixing induced by the elongated shape of the potential leads to a strong polarization anisotropy and to the observation of dark exciton states under magnetic field. The biexciton-exciton transition reproduces all the fine structure of the exciton state including the transition of the biexciton to the dark exciton state.
Besombes; Kheng; Martrou
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Publication Detail:
Journal Detail:
Title:  Physical review letters     Volume:  85     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2000 Jul 
Date Detail:
Created Date:  2000-09-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  UNITED STATES    
Other Details:
Languages:  Eng     Pagination:  425-8     Citation Subset:  -    
CEA-Grenoble, Departement de Recherche Fondamentale sur la Matiere Condensee/SP2M, 17 avenue des Martyrs, 38054 Grenoble Cedex 9, France.
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