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Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations
M. Daghofer, W. Koller, A. Pruell +2
Effective models are derived from the ferromagnetic Kondo lattice model with classical corespins, which greatly reduce the numerical effort. Results for these models are presented.…
Perfect Tempering
M. Daghofer, M. Konegger, H. G. Evertz +1
Multimodal structures in the sampling density (e.g. two competing phases) can be a serious problem for traditional Markov Chain Monte Carlo (MCMC), because correct sampling of the…
Creation and destruction of a spin gap in weakly coupled quarter-filled ladders
B. Edegger, H. G. Evertz, R. M. Noack
We investigate weakly coupled quarter-filled ladders with model parameters relevant for NaV_2O_5 using density-matrix renormalization group calculations on an extended Hubbard mode…
Charge order induced by electron-lattice interaction in NaV2O5
B. Edegger, H. G. Evertz, R. M. Noack
We present Density Matrix Renormalization Group calculations of the ground-state properties of quarter-filled ladders including static electron-lattice coupling. Isolated ladders a…
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…