TY - JOUR
T1 - Non-Fermi-liquid behaviour of U3-xNi3Sn4-y single crystals
AU - Shlyk, L.
AU - Waerenborgh, J. C.
AU - Estrela, P.
AU - De Long, L. E.
AU - De Visser, A.
AU - Almeida, M.
PY - 1999/5/3
Y1 - 1999/5/3
N2 - U3Ni3Sn4 and U2.9Ni3.0Sn3.9 single crystals exhibit a non-Fermi-liquid susceptibility χ ∝ T-0.3 between 1.7 and 10 K. The electronic heat capacity coefficient γ(T) of U2.9Ni3.0Sn3.9 varies as the square root of temperature between 0.3 and 5 K. Although most available non-Fermi-liquid models are in disagreement with these results, the heat capacity data are consistent with a renormalization group calculation for magnetic fluctuations near an antiferromagnetic quantum critical point (QCP). Alternatively, both the magnetic and heat capacity data can be fitted to a Griffiths-phase model for magnetic clusters near a QCP, using a single characteristic exponent λ = 0.7.
AB - U3Ni3Sn4 and U2.9Ni3.0Sn3.9 single crystals exhibit a non-Fermi-liquid susceptibility χ ∝ T-0.3 between 1.7 and 10 K. The electronic heat capacity coefficient γ(T) of U2.9Ni3.0Sn3.9 varies as the square root of temperature between 0.3 and 5 K. Although most available non-Fermi-liquid models are in disagreement with these results, the heat capacity data are consistent with a renormalization group calculation for magnetic fluctuations near an antiferromagnetic quantum critical point (QCP). Alternatively, both the magnetic and heat capacity data can be fitted to a Griffiths-phase model for magnetic clusters near a QCP, using a single characteristic exponent λ = 0.7.
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U2 - 10.1088/0953-8984/11/17/310
DO - 10.1088/0953-8984/11/17/310
M3 - Article
AN - SCOPUS:0006975894
SN - 0953-8984
VL - 11
SP - 3525
EP - 3534
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 17
ER -