Abstract
The Mott transition in bulk semiconductors is well understood as a consequence of screening of the Coulomb interaction between carriers. While the energetic position of the exciton stays nearly unchanged, the exciton peak disappears due to bandgap shrinkage. This was explained qualitatively by a strong compensation of gap shrinkage and weakening of the Coulomb interaction due to screening.
© 1998 Optical Society of America
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