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

doi:10.1007/s002570050366

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 journal › Article › peer-review

19 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	235-242
Number of pages	8
Journal	Zeitschrift fur Physik B-Condensed Matter
Volume	103
Issue number	2
DOIs	https://doi.org/10.1007/s002570050366
Publication status	Published - 1996 Jun
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.1007/s002570050366

Cite this

@article{396bae109eea407ea654f9307505f30a,

title = "Are heavy-fermion metals Fermi liquids?",

abstract = "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.",

author = "F. Steglich and P. Gegenwart and R. Helfrich and C. Langhammer and P. Hellmann and L. Donnevert and C. Geibel and M. Lang and G. Sparn and W. Assmus and Stewart, {G. R.} and A. Ochiai",

year = "1996",

month = jun,

doi = "10.1007/s002570050366",

language = "English",

volume = "103",

pages = "235--242",

journal = "Zeitschrift f{\"u}r Physik B Condensed Matter and Quanta",

issn = "1434-6028",