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Influence of the Non‐Hermitean Splitting Terms on Excitonic Spectra
Author(s) -
Zimmermann R.
Publication year - 1970
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.19700410103
Subject(s) - exciton , physics , excitation , range (aeronautics) , bethe–salpeter equation , zero (linguistics) , spectral line , effective mass (spring–mass system) , quantum electrodynamics , condensed matter physics , quantum mechanics , materials science , bound state , linguistics , philosophy , composite material
A treatment of the Bethe‐Salpeter equation leads to additional short‐range interaction terms in the effective‐mass equation of the exciton theory. These non‐Hermitean splitting terms decrease the excitation energies and cause the triplet energy to be the first to become zero if the energy gap is reduced.