c-axis Transport in UTe2: Evidence of Three-Dimensional Conductivity Component

Published

August 24, 2022

Author(s)

Yun S. Eo, Shouzheng Liu, Shanta Saha, Hyunsoo Kim, Sheng Ran, Jarryd A. Horn, Halyna Hodovanets, John Collini, Tristin Metz, Wesley T. Fuhrman, Andriy H. Nevidomskyy, Jonathan D. Denlinger, Nicholas Butch, Michael S. Fuhrer, L. A. Wray, Johnpierre Paglione

Abstract

We study the temperature dependence of electrical resistivity for currents directed along all crystallographic axes of the spin-triplet superconductor UTe₂. We focus particularly on an accurate determination of the resistivity along the c-axis (ρ_c) by using transport geometries that allow extraction of two resistivities along with the primary axes directions. Measurement of the absolute values of resistivities in all current directions reveals a surprisingly (given the anticipated highly anisotropic bandstructure) nearly isotropic transport behavior at temperatures above Kondo coherence, with P_c P_b 2P_a, but with a qualitatively distinct behavior at lower temperatures. The temperature dependence of ρ_c exhibits a Kondo-like maximum at much lower temperatures compared to that of ρ_a and ρ_b, providing important insight into the underlying electronic structure necessary for building a microscopic model of UTe₂.

Citation

Physical Review B

Volume

106

Issue

6

Pub Type

Journals

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DOI Link

Keywords

electrical resistivity, superconductivity

Citation

Eo, Y. , Liu, S. , Saha, S. , Kim, H. , Ran, S. , Horn, J. , Hodovanets, H. , Collini, J. , Metz, T. , Fuhrman, W. , Nevidomskyy, A. , Denlinger, J. , Butch, N. , Fuhrer, M. , Wray, L. and Paglione, J. (2022), c-axis Transport in UTe2: Evidence of Three-Dimensional Conductivity Component, Physical Review B, [online], https://dx.doi.org/10.1103/PhysRevB.106.L060505 (Accessed April 28, 2024)