Johannes Ferber

LDA + DMFT study of the effects of correlation in LiFeAs

We discuss the role of electronic correlations in the iron-based superconductor LiFeAs by studying the effects on band structure, mass enhancements, and Fermi surface in the framework of density functional theory combined with dynamical mean field theory calculations. We conclude that LiFeAs shows characteristics of a moderately correlated metal and that the strength of correlations is mainly controlled by the value of the Hund’s rule coupling J . The hole pockets of the Fermi surface show a distinctive change in form and size with implications for the nesting properties. Our calculations are in good agreement with recent angle-resolved photoemission spectroscopy and de Haas-van Alphen experiments.

Analysis of spin-density wave conductivity spectra of iron pnictides in the framework of density functional theory

The optical conductivity of LaFeAsO, BaFe

Fermi surface topology of LaFePO and LiFeP.

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Dynamical cluster approximation within an augmented plane wave framework: Spectral properties of SrVO3

As

Unveiling the microscopic nature of correlated organic conductors: The case of κ -(ET) 2Cu [N(CN) 2] Br x Cl 1-x

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LDA+DMFT investigation of the organic charge transfer salt

, SrFe

\kappa

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-(BEDT-TTF)

As

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Cu[N(CN)

, and EuFe