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Recovery of the Fermi-liquid state in U_3Ni_3Sn_4 by pressure

P. Estrela·A. de Visser·F. R. de Boer·T. Naka·L. Shlyk
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Abstract

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.

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P. Estrela, A. de Visser, F. R. de Boer, T. Naka, L. Shlyk. 2000-11-03. Recovery of the Fermi-liquid state in U_3Ni_3Sn_4 by pressure. https://doi.org/10.1103/physrevb.63.212409

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