Anisotropic inelastic scattering and its interplay with superconductivity in URu2Si2

Zengwei Zhu; Elena Hassinger; Zhu’an Xu; Dai Aoki; Jacques Flouquet; Kamran Behnia

doi:10.1103/PhysRevB.80.172501

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Anisotropic inelastic scattering and its interplay with superconductivity in URu2Si2

Zengwei Zhu, Elena Hassinger, Zhu’an Xu, Dai Aoki, Jacques Flouquet, Kamran Behnia

DOI 10.1103/PhysRevB.80.172501 · Physical Review B

T1

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Abstract

In contrast to almost all anisotropic superconductors, the upper critical field of URu2Si2 is larger when the field is oriented along the less conducting direction. We present a study of resistivity and Seebeck coefficient extended down to sub-Kelvin temperature range uncovering a singular case of anisotropy. When the current is injected along the c axis URu2Si2 behaves as a low-density Fermi liquid. When it flows along the a axis, even in presence of a large field, resistivity remains T-linear down to Tc and the Seebeck coefficient undergoes a sign change at very low temperatures. We conclude that the characteristic energy scale is anisotropic and vanishingly small in the basal plane.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
URu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.5	Pressure not reported	midpoint
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
NpPd5Al2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown