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The Interaction of Surface Excitons
Author(s) -
Bobrysheva A. I.,
Zyukov V. T.,
Beryl S. I.
Publication year - 1980
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.2221010107
Subject(s) - exciton , hamiltonian (control theory) , condensed matter physics , biexciton , surface (topology) , physics , mathematics , geometry , mathematical optimization
The Fourier transform v ( p ) of the exciton–exciton interaction energy is derived. The excitons are situated in a semiinfinite polar crystal near the surface. The character of the interaction depends essentially on the symmetry of the spin functions under the permutation of identical particles. On the base of v ( p ) the shift of the surface excitons level with increasing exciton density n ex is obtained. The numerical value is listed for GaAs. The effective Hamiltonian of surface excitons interacting through exchange by virtual surface longitudinal optical phonons is derived.