Ab initio calculation of excitonic effects in the optical spectra of semiconductors

Stefan Albrecht; Lucia Reining; Rodolfo Del Sole; Giovanni Onida

doi:10.1103/physrevlett.80.4510

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Ab initio calculation of excitonic effects in the optical spectra of semiconductors

Stefan Albrecht·Lucia Reining·Rodolfo Del Sole·Giovanni Onida

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Abstract

An ab initio approach to the calculation of excitonic effects in the optical absorption spectra of semiconductors and insulators is formulated. It starts from a quasiparticle bandstructure calculation and is based on the relevant Bethe--Salpeter equation. An application to bulk silicon shows a substantial improvement with respect to previous calculations in the description of the experimental spectrum, for both peak positions and lineshape.

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Stefan Albrecht, Lucia Reining, Rodolfo Del Sole, Giovanni Onida. 1998-03-16. Ab initio calculation of excitonic effects in the optical spectra of semiconductors. https://doi.org/10.1103/physrevlett.80.4510

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