Dynamical excitonic effects in metals and semiconductors

Abstract

The dynamics of an electron--hole pair induced by the time--dependent screened Coulomb interaction is discussed. In contrast to the case where the static electron--hole interaction is considered we demonstrate the occurrence of important dynamical excitonic effects in the solution of the Bethe--Salpeter equation.This is illustrated in the calculated absorption spectra of noble metals (copper and silver) and silicon. Dynamical corrections strongly affect the spectra, partially canceling dynamical self--energy effects and leading to good agreement with experiment.

Accepted for publication on Phys. Rev. Lett

References in corpus (7)

• The GW method
• Ab initio calculation of excitonic effects in the optical spectra of semiconductors
• Quasiparticle Electronic structure of Copper in the GW approximation
• First--principles calculation of the plasmon resonance and of the reflectance spectrum of Silver in the GW approximation
• Plane-waves DFT-LDA calculation of the electronic structure and absorption spectrum of Copper
• Plasmonic excitations in noble metals: The case of Ag
• Time-dependent screening of a positive charge distribution in metals: Excitons on an ultra-short time scale

Cited by in corpus (25)

• Quasiparticle and Optical Properties of Rutile and Anatase TiO${}_2$
• A real-time approach to the optical properties of solids and nano-structures: the time-dependent Bethe-Salpeter equation
• Transient excitons at metal surfaces
• Electronic bandgap and exciton binding energy of layered semiconductor TiS3
• Accurate optical properties from first principles: a Quasiparticle Self consistent GW plus Bethe-Salpeter Equation approach
• Accurate optical spectra through time-dependent density functional theory based on screening-dependent hybrid functionals
• QS$G\hat{W}$: Quasiparticle Self consistent $GW$ with ladder diagrams in $W$
• Electron-electron and electron-phonon correlation effects on the finite temperature electronic and optical properties of zb-GaN
• Non-equilibrium Bethe-Salpeter equation for transient photo-absorption spectroscopy
• Connections and performances of Green's function methods for charged and neutral excitations
• Speeding up the solution of the Bethe-Salpeter equation by a double-grid method and Wannier interpolation
• Real-time exciton dynamics with time-dependent density-functional theory
• On the combined use of GW approximation and cumulant expansion in the calculations of quasiparticle spectra: The paradigm of Si valence bands
• Time-linear scaling NEGF methods for real-time simulations of interacting electrons and bosons. I. Formalism
• Experimental realization of a semiconducting full Heusler compound: Fe2TiSi
• Temperature-dependent dielectric function of bulk SrTiO${}_3$: Urbach tail, band edges, and excitonic effects
• Optical response and band structure of LiCoO2 including electron-hole interaction effects
• Optical properties of CsCu${}_2$X${}_3$ (X=Cl, Br and I): A comparative study between hybrid time-dependent density-functional theory and the Bethe-Salpeter equation
• Exciton-phonon interaction calls for a revision of the "exciton" concept
• Electron-phonon scattering effects on electronic and optical properties of orthorhombic GeS
• A formally exact one-frequency-only Bethe-Salpeter-like equation. Similarities and differences between GW +BSE and self-consistent RPA
• Plasmonically assisted channels of photoemission from metals
• Exciton-driven giant non-linear overtone signals from buckled hexagonal monolayer GaAs
• Phonon-assisted damping of plasmons in three- and two-dimensional metals
• Expeditious computation of nonlinear optical properties of arbitrary order with native electronic interactions in the time domain