Recovery of the Fermi-liquid state in U_3Ni_3Sn_4 by pressure

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.

arXiv comment14 pages (including 4 figures); pdf format

References in corpus (5)

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• Theories of non-Fermi liquid behavior in heavy fermions
• Specific Heat of a Three Dimensional Metal Near a T=0 Magnetic Transition with Dynamic Exponent z=2,3,4
• Magnetotransport in nearly antiferromagnetic metals
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Cited by in corpus (5)

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• Splitting Fermi Surfaces and Heavy Electronic States in Non-Centrosymmetric U3Ni3Sn4
• High pressure transport study of non-Fermi liquid behaviour in U2Pt2In and U3Ni3Sn4