Effective spinless fermions in the strong coupling Kondo model

Simple item page
dc.creatorKoller, Winfried
dc.creatorPruell, Alexander
dc.creatorEvertz, Hans Gerd
dc.creatorvon der Linden, Wolfgang
dc.date2002-06-05
dc.date2002-11-21
dc.date.accessioned2026-07-07T02:45:44Z
dc.date.available2026-07-07T02:45:44Z
dc.descriptionStarting from the two-orbital Kondo-lattice model with classical t_2g spins, an effective spinless fermion model is derived for strong Hund coupling J_H with a projection technique. The model is studied by Monte Carlo simulations and analytically using a uniform hopping approximation. The results for the spinless fermion model are in remarkable agreement with those of the original Kondo-lattice model, independent of the carrier concentration, and even for moderate Hund coupling J_H. Phase separation, the phase diagram in uniform hopping approximation, as well as spectral properties including the formation of a pseudo-gap are discussed for both the Kondo-lattice and the effective spinless fermion model in one and three dimensions.
dc.descriptionRevtex4, 10 pages, 15 figures, typos corrected
dc.identifierhttps://arxiv.org/abs/cond-mat/0206049
dc.identifierhttp://arxiv.org/abs/cond-mat/0206049
dc.identifierPhys. Rev. B 66, 144425 (2002)
dc.identifierdoi:10.1103/PhysRevB.66.144425
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/19408
dc.subjectStrongly Correlated Electrons
dc.titleEffective spinless fermions in the strong coupling Kondo model
dc.typetext

Files

Collections

arXiv