65 citations · 92 across the 6 of their papers we have counts for
6 papers
Ferromagnetism in the large-U Hubbard model
Thomas Obermeier, Thomas Pruschke, Joachim Keller
We study the Hubbard model on a hypercubic lattice with regard to the possibility of itinerant ferromagnetism. The Dynamical Mean Field theory is used to map the lattice model on a…
Effects of spin fluctuations in the t-J model
T. Obermeier, T. Pruschke, J. Keller
Recent experiments on the Fermi surface and the electronic structure of the cuprate-supercondutors showed the importance of short range antiferromagnetic correlations for the physi…
Dynamical Magnetic Susceptibility for the - Model
Th. Pruschke, Th. Obermeier, J. Keller
We present results for the {\em dynamical}\/ magnetic susceptibility of the - model, calculated with the dynamical mean field theory. For we find enhanced ferromagnetic…
Magnetic Properties of the t-J Model in the Dynamical Mean-Field Theory
Thomas Pruschke, Qi Qin, Thomas Obermeier +1
We present a theory for the spin correlation function of the t-J model in the framework of the dynamical mean-field theory. Using this mapping between the lattice and a local model…
Properties of the t-J Model in the Dynamical Mean Field Theory: One-Particle Properties in the Antiferromagnetic Phase
Thomas Obermeier, Thomas Pruschke, Joachim Keller
We study the one-particle properties of the t-J model within the framework of Vollhardt's dynamical mean field theory. By introducing an AB - sublattice structure we explicitely al…
Spectral Properties and Bandstructure of Correlated Electron Systems
Th. Pruschke, Th. Obermeier, J. Keller +1
We present -dependent one-particle spectra and corresponding effective bandstructures for the Hubbard model calculated within the dynamical molecular field theory (DM…