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Auger decay, Spin-exchange, and their connection to Bose-Einstein condensation of excitons in Cu_2O | | G. M. Kavoulakis
; A. Mysyrowicz
; | | Date: |
31 Dec 1999 | | Journal: | Phys. Rev. B, 61 (2000) 16619 | | Subject: | cond-mat | | Affiliation: | NORDITA, Denmark), and A. Mysyrowicz (Ecole Polytechnique, Palaiseau, France | | Abstract: | In view of the recent experiments of O’Hara, et al. on excitons in Cu_2O, we examine the interconversion between the angular-momentum triplet-state excitons and the angular-momentum singlet-state excitons by a spin-exchange process which has been overlooked in the past. We estimate the rate of this particle-conserving mechanism and find a substantially higher value than the Auger process considered so far. Based on this idea, we give a possible explanation of the recent experimental observations, and make certain predictions, with the most important being that the singlet-state excitons in Cu_2O is a very serious candidate for exhibiting the phenomenon of Bose-Einstein condensation. | | Source: | arXiv, cond-mat/0001438 | | Services: | Forum | Review | PDF | Favorites | |
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