Abstract
We discuss the relation between the coefficient of electrical resistivity and the -linear specific-heat coefficient for heavy-fermion systems with general , where is the degeneracy of quasiparticles. A set of experimental data reveals that the Kadowaki-Woods relation, , collapses remarkably for large- systems, although this relation has been regarded to be commonly applicable to the Fermi liquids. Instead, based on the Fermi-liquid theory we propose a new relation, with and . This new relation exhibits an excellent agreement with the data for the whole range of degenerate heavy fermions.
- Received 3 June 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.057201
©2005 American Physical Society