Abstract
AbstractA criticism of Elliott's model of the excitonic absorption coefficient has been made in a recent paper by Auvergne and Camassel. They proposed a model in which the electron‐hole interaction is neglected for the continuum states. This criticism was based mainly on an alleged discontinuity in the exciton envelope function between the discrete and continuum spectra. In the present paper it is shown that in fact, no such discontinuity exists and the electron‐hole interaction should not be ignored in the continuum. Elliott's model is correct within the specified limitations and, appropriately broadened, gives quite satisfactory agreement with the experimental data.
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