phenomena
Emergent phenomena occur in systems in which the electron-electron repulsion is large.
Understanding these phenomena is one of the central issues in solid-state physics.
The rich variety of emergent behaviors is the result of the interplay between Coulomb
repulsion, orbital, spin, charge degrees of freedom and chemistry.
We are interested in understanding this interplay.
materials & topics
transition-metal oxides
correlations vs crystal field vs spin-orbit
high temperature superconducting cuprates
Mott transition
orbital and charge ordering
NMR and Resonant X ray scattering experiments in correlated materials
highly frustrated systems
Kondo and heavy fermion systems
Kondo effect in quantum dots
molecular nanomagnets
methods
constructing ab-initio many-body models
electronic structure methods (LMTO, NMTO, LAPW, pseudopotentials, LDA, LDA+U)
Wannier functions (NMTO downfolding)
many-body techniques (DMFT, QMC, NCA, variational methods, perturbative RG)
combination of electronic structure and many-body methods
quantum Montecarlo methods
projects & support
Understanding strong electronic correlations: role of full Coulomb Vertex
JARA-SIM seed project (completed)
Strongly correlated ruthenates
European Project MAMA (completed)
Orbital Ordering, Realistic Coulomb vertex and Multiplet Effects
Research Unit FOR1346 (completed)
Dynamical Mean-Field Approach with Predictive Power for Strongly Correlated Materials
Magnetism in strongly correlated systems
Research Training Group RTG1995 (running)
Quantum many-body methods in condensed matter systems
