Auger decay of degenerate and Bose-condensed excitons in Cu$_2$O

Details Auger decay of degenerate and Bose-condensed excitons in Cu$_2$O Auger decay of degenerate and Bose-condensed excitons in Cu$_2$O

1996-03-07

arxiv.org/abs/cond-mat/9603053v1

Phys. Rev. B, 54 (1996) 16625

Physics

Condensed Matter

15 pages, revtex, figures available from G. Kavoulakis

Scientific paper

10.1103/PhysRevB.54.16625

We study the non-radiative Auger decay of excitons in Cu$_2$O, in which two excitons scatter to an excited electron and hole. The exciton decay rate for the direct and the phonon-assisted processes is calculated from first principles; incorporating the band structure of the material leads to a relatively shorter lifetime of the triplet state ortho excitons. We compare our results with the Auger decay rate extracted from data on highly degenerate triplet excitons and Bose-condensed singlet excitons in Cu$_2$O.

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