90 citations · 245 across the 11 of their papers we have counts for
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Parametrized canonical transformation for the Hubbard-model at arbitrary interaction strength
Balazs Hetenyi, Hans Gerd Evertz
The and Heisenberg models are truncated expansions of a canonically transformed Hubbard model coinciding with it at . We show that a modified canonical transform…
Lattice dynamics of the Heisenberg chain coupled to finite frequency bond phonons
Franz Michel, Hans-Gerd Evertz
The phonon dynamics in a one dimensional Heisenberg spin chain coupled to finite-frequency bond phonons is studied. We present the first detailed phonon spectra for these systems u…
Ferromagnetic polarons in the one-dimensional ferromagnetic Kondo model with quantum mechanical S=3/2 core spins
D. R. Neuber, M. Daghofer, R. M. Noack +2
We present an extensive numerical study of the ferromagnetic Kondo lattice model with quantum mechanical S=3/2 core spins. We treat one orbital per site in one dimension using the…
Ferromagnetic Polarons, Phase Separation, Stripes and Polaron Lattice: The two- and three-dimensional ferromagnetic Kondo Model
M. Daghofer, W. Koller, H. G. Evertz +1
We investigate the two- and three-dimensional ferromagnetic Kondo lattice model by unbiased Monte Carlo simulations. A phase diagram for the two-dimensional model is presented, in…
Finite-temperature investigation of quarter filled ladder systems
C. Gabriel, E. Sherman, T. C. Lang +2
We investigate charge ordering in a quarter-filled ladder at finite temperature by determinantal Quantum Monte Carlo. The sign problem is moderate in a wide range of model paramete…
Single particle spectrum of the flux phase in the FM Kondo Model
M. Daghofer, W. Koller, W. von der Linden +1
We investigate the 2D ferromagnetic Kondo lattice model for manganites with classical corespins at Hund's rule coupling J_H=6, with antiferromagnetic superexchange 0.03 < J' < 0.05…