The European Physical Journal B

, Volume 68, Issue 2, pp 201–208 | Cite as

Quasiparticle properties of strongly correlated electron systems with itinerant metamagnetic behavior

  • J. BauerEmail author
Open Access
Solid State and Materials


A brief account of the zero temperature magnetic response of a system of strongly correlated electrons in strong magnetic field is given in terms of its quasiparticle properties. The scenario is based on the paramagnetic phase of the half-filled Hubbard model, and the calculations are carried out with the dynamical mean field theory (DMFT) together with the numerical renormalization group (NRG). As well known, in a certain parameter regime one finds a magnetic susceptibility which increases with the field strength. Here, we analyze this metamagnetic response based on Fermi liquid parameters, which can be calculated within the DMFT-NRG procedure. The results indicate that the metamagnetic response can be driven by field-induced effective mass enhancement. However, also the contribution due to quasiparticle interactions can play a significant role. We put our results in context with experimental studies of itinerant metamagnetic materials.


71.10.Fd Lattice fermion models 71.27.+a Strongly correlated electron systems; heavy fermions 71.30.+h Metal-insulator transitions and other electronic transitions 75.20.-g Diamagnetism, paramagnetism, and superparamagnetism 71.10.Ay Fermi-liquid theory and other phenomenological models 


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Authors and Affiliations

  1. 1.Max-Planck Institute for Solid State ResearchStuttgartGermany

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