ISSN:
1434-6036
Keywords:
PACS. 71.27.+a Strongly correlated electron systems; heavy fermions - 71.10.Ay Fermi-liquid theory and other phenomenological models - 75.30.Mb Valence fluctuation, Kondo lattice, and heavy-fermion phenomena
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: A comprehensive study of the relationship between the electronic specific heat coefficient ( ) and the temperature square coefficient (A) of the electrical resistivity for a single, cubic, heavy fermion alloy system, UPt5-xAux is presented. In this alloy system, whose low temperature properties are consistent with the Fermi-liquid behavior, varies by more than a factor of 10 while the corresponding A coefficient changes by a factor larger than 200. A tracks changes in fairly well, but , postulated to have a universal value for heavy fermions, is not constant and varies from about 10-6 (x = 0, 0.5) to 10-5 cm (mol K/mJ)2 (x 〉 1.1), thus from a value typical of transition metals to that characteristic of other heavy fermion compounds. We have found a correlation between and magnetic characteristics such as the paramagnetic Curie-Weiss temperature and the low temperature magnetic susceptibility divided by .
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050976
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