TY - JOUR
T1 - Are heavy-fermion metals Fermi liquids?
AU - Steglich, F.
AU - Gegenwart, P.
AU - Helfrich, R.
AU - Langhammer, C.
AU - Hellmann, P.
AU - Donnevert, L.
AU - Geibel, C.
AU - Lang, M.
AU - Sparn, G.
AU - Assmus, W.
AU - Stewart, G. R.
AU - Ochiai, A.
PY - 1996/6
Y1 - 1996/6
N2 - 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.
AB - 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.
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U2 - 10.1007/s002570050366
DO - 10.1007/s002570050366
M3 - Article
AN - SCOPUS:0000583295
VL - 103
SP - 235
EP - 242
JO - Zeitschrift für Physik B Condensed Matter and Quanta
JF - Zeitschrift für Physik B Condensed Matter and Quanta
SN - 1434-6028
IS - 2
ER -