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Dispersion relation for surface wannier excitons
Author(s) -
Rimbey P. R.
Publication year - 1975
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.2220680220
Subject(s) - exciton , dispersion relation , dispersion (optics) , condensed matter physics , phenomenological model , wavelength , surface (topology) , physics , boundary value problem , materials science , optics , quantum mechanics , mathematics , geometry
The surface exciton dispersion relation is derived for a spatially dispersive medium including the additional boundary condition P x (0 + ) = 0. The dispersion is complex for long‐wavelength P‐polarized light in the absence of phenomenological damping suggesting surface excitons exist as critically damped wavepackets.