Abstract:
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.
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Received 23 December 1998 and Received in final form 10 June 1999
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Continentino, M. Wilson and Kadowaki-Woods ratios in heavy fermions. Eur. Phys. J. B 13, 31–35 (2000). https://doi.org/10.1007/s100510050006
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DOI: https://doi.org/10.1007/s100510050006