English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

In this work we present a new procedure to compute optical spectra includingexcitonic effects and approximated quasiparticle corrections with reducedcomputational effort. The excitonic effects on optical spectra are included bysolving the Bethe-Salpeter equation, considering quasiparticle eigenenergiesand respective wavefunctions obtained within DFT-1/2 method. The electron-holeladder diagrams are approximated by the screened exchange. To prove thecapability of the procedure, we compare the calculated imaginary part of thedielectric functions of Si, Ge, GaAs, GaP, GaSb, InAs, InP, and InSb withexperimental data. The energy position of the absorption peaks are correctlydescribed. The good agreement with experimental results together with the verysignificant reduction of computational effort makes the procedure suitable onthe investigation of optical spectra of more complex systems.

Efficient Calculation of Excitonic Effects in Solids Including Approximated Quasiparticle Energies