Are heavy-fermion metals Fermi liquids?

F. Steglich, P. Gegenwart, R. Helfrich, C. Langhammer, P. Hellmann, L. Donnevert, C. Geibel, M. Lang, G. Sparn, W. Assmus, G. R. Stewart, A. Ochiai

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


We present the results of specific-heat and resistivity measurements as a function of temperature, magnetic field and hydrostatic pressure on the Kondo lattice CeNi2Ge2, the heavy-fermion superconductors CeCu2Si2 and UBe13 as well as the low-carrier-density system Yb4As3. "Non-Fermi-liquid" effects in the low-temperature normal-state properties of the three former systems are consistent with the existence of a "nearby" quantum critical point, presumably of antiferromagnetic type. Yb4As3, though showing the outward appearance of a Landau-type heavy-fermion metal, behaves very differently, i.e. as an extreme two-fluid system.

Original languageEnglish
Pages (from-to)235-242
Number of pages8
JournalZeitschrift fur Physik B-Condensed Matter
Issue number2
Publication statusPublished - 1996 Jun
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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