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The Biexciton Influence on Bose‐Einstein Condensation of Orthoexcitons in Cu 2 O
Author(s) -
Bobrysheva A. I.,
Moskalenko S. A.,
Russu S. S.
Publication year - 1991
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/pssb.2221670224
Subject(s) - biexciton , bose–einstein condensate , condensation , crystal (programming language) , condensed matter physics , physics , einstein , atomic physics , exciton , quantum mechanics , thermodynamics , computer science , programming language
The influence of the biexcitons formed from two orthoexcitons on the Bose‐Einstein condensation (BEC) of orthoexcitons and the possibility of the BEC of biexcitons is studied theoretically. It is shown that the existence of biexcitons in Cu 2 O crystal leads to a considerable difficulty for the observation of the BEC of orthoexcitons. The lineshape of the net gain of biexciton transition in Cu 2 O crystal is calculated. The obtained line is characterized by a strongly marked asymmetric form with a gentle sloping long‐wave tail and a sharp peak which is peculiar to BEC of biexcitons.