We show that a strongly correlated Fermi system with the fermion condensate, which exhibits strong deviations from Landau Fermi liquid behavior, is driven into the Landau Fermi liquid by applying a small magnetic field B at temperature T=0. This field-induced Landau Fermi liquid behavior provides the constancy of the Kadowaki-Woods ratio. A reentrance into the strongly correlated regime is observed if the magnetic field B decreases to zero, then the effective mass M∗ diverges as M∗∝1/B. At finite temperatures, the strongly correlated regime is restored at some temperature T∗∝B. This behavior is of general form and takes place in both three dimensional and two dimensional strongly correlated systems. We demonstrate that the observed 1/B divergence of the effective mass and other specific features of heavy-fermion metals are accounted for by our consideration.
@article{arxiv.cond-mat/0209503,
title = {Transition from non Fermi Liquid Behavior to Landau Fermi Liquid Behavior Induced by Magnetic Fields},
author = {Yu. G. Pogorelov and V. R. Shaginyan},
journal= {arXiv preprint arXiv:cond-mat/0209503},
year = {2009}
}