Dielectric properties and excitons for extended systems from hybrid functionals

Abstract

We have calculated static and dynamic response properties for several semiconducting and insulating solids using hybrid functionals, which admix a small fraction of nonlocal Fock exchange to an otherwise semilocal density functional. The calculated static and dynamic properties are clearly improved compared to conventional semilocal density functionals; in particular the oscillator strength at low energy excitations is well described.