Excitonic Molecule in Wurtzite Crystals
W. Ungier, P. Janiszewski and M. Suffczyński
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
Received: July 23, 1993; in final form: November 3, 1993
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We calculate with the variational technique the fine structure of a biexciton in wurtzite crystals with the effective electron-hole exchange interaction taken into account. The values of the electron-hole exchange integrals are taken from the free exciton Γ56 splitting. We calculate the biexciton dissociation energy and the ratio of mixing of the symmetric and antisymmetric envelopes which arises from the electron-hole exchange interaction. Results are presented for CdS, CdSe and ZnS crystals.
DOI: 10.12693/APhysPolA.85.607
PACS numbers: 71.35.+z