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Article
Conserving quasiparticle calculations for small metal clusters
A novel approach for GW-based calculations of quasiparticle properties for finite systems is presented, in which the screened interaction is obtained directly from a linear response calculation of the density-...
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Article
Optical absorption spectra of finite systems from a conserving Bethe-Salpeter equation approach
We present a method for computing optical absorption spectra by means of a Bethe-Salpeter equation approach, which is based on a conserving linear response calculation for electron-hole coherences in the pres...
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Chapter and Conference Paper
Electronic Scattering Dynamics and Ultrafast Magnetization Dynamics
A dynamical model for Elliott-Yafet type scattering of carriers and its importance for the demagnetization dynamics after ultrafast optical excitation is reviewed. It is pointed out that the demagnetization in...
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Chapter and Conference Paper
Electron Lifetimes in a 2D Electron-Gas with Rashba SO-Coupling: Screening Properties
We calculate lifetimes due to electron-electron scattering in a 2D Rashba band structure and study the influence of the substrate screening. A comparison with measurements on the quantum-well system Bi/Cu(111)...
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Chapter and Conference Paper
Relaxation Dynamics of Majority and Minority Electrons After Ultrashort Laser Excitation
We analyze the ultrafast demagnetization after ultrashort laser excitation by a kinetic model based on Elliott-Yafet scattering processes. By applying complete Boltzmann scattering integrals we trace the major...