Abstract
We develop a theory of exciton-phonon sidebands in the absorption spectra of semiconductors. The theorydoes not rely on an ad hoc exciton-phonon picture, but is based on a more fundamental electron-phononHamiltonian, thus avoiding a priori assumptions about excited-state properties. We derive a nonperturbativecompact solution that can be looked upon as the semiconductor version of the textbook absorption formula fora two-level system coupled to phonons. Accompanied by an illustrative numerical example, the importance andusefulness of our approach with respect to practical applications for semiconductors is demonstrated.
Original language | English |
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Article number | 113202 |
Pages (from-to) | 113202-1/4 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 72 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2005 |