https://doi.org/10.1007/s100510050006
Wilson and Kadowaki-Woods ratios in heavy fermions
Instituto de Fisica, Universidade Federal Fluminense,
Campus da Praia Vermelha, Niterói, 24.210-340, RJ, Brazil
Corresponding author: a mucio@if.uff.br
Received:
23
December
1998
Revised:
10
June
1999
Published online: 15 January 2000
Recently we have shown that a one-parameter scaling, 
, describes
the physical behavior of several heavy fermions in a region of their phase
diagram. In this paper we fully characterize this region, obtaining the
uniform susceptibility, the resistivity and the specific heat in terms of
the coherence temperature . This allows for an explicit evaluation
of the Wilson and the Kadowaki-Woods ratios in this regime. These quantities
turn out to be independent of the distance 
to the quantum
critical point (QCP). The theory of the one-parameter scaling corresponds to
a local interacting model. Although spatial correlations are irrelevant in
this case, time fluctuations are critically correlated as a consequence of
the quantum character of the transition.
PACS: 71.27.+a – Strongly correlated electron systems; heavy fermions / 75.30.Mb – Valence fluctuation, Kondo lattice, and heavy-fermion phenomena / 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
