Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2000-11-03
Phys. Rev. B 63 (2001) 212409
Physics
Condensed Matter
Strongly Correlated Electrons
14 pages (including 4 figures); pdf format
Scientific paper
10.1103/PhysRevB.63.212409
Measurements of the resistivity of single-crystalline U_3Ni_3Sn_4 under hydrostatic pressure up to 1.8 GPa are reported. We show that the temperature T_FL, below which the resistivity obeys the Fermi-liquid expression rho ~ T^2, increases with pressure as T_FL ~ (p-p_c)^1/2. The analysis of the data within the magnetotransport theory of Rosch lends strong support for an antiferromagnetic quantum critical point in U_3Ni_3Sn_4 at a negative critical pressure p_c of -0.04+-0.02 GPa. The proximity to an antiferromagnetic instability in U_3Ni_3Sn_4 is consistent with the previously reported non-Fermi liquid term in the low-temperature specific heat.
de Boer F. R.
Estrela P.
Naka Takashi
Shlyk L.
Visser Anne de
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