Anisotropic signatures of the electronic correlations in the electrical resistivity of UTe${}_2$

Abstract

Multiple unconventional superconducting phases are suspected to be driven by magnetic fluctuations in the heavy-fermion paramagnet UTe${}_2$, and a challenge is to identify the signatures of the electronic correlations, including the magnetic fluctuations, in the bulk physical quantities. Here, we investigate thoroughly the anisotropy of the electrical resistivity of UTe${}_2$ under intense magnetic fields up to 70~T, for different electrical-current and magnetic-field configurations. Two characteristic temperatures and an anisotropic low-temperature Fermi-liquid-like coefficient $A$, controlled by the electronic correlations, are extracted. Their critical behavior near the metamagnetic transition induced at ${\mu }_0{H}_m\simeq 35$~T for $\mathbf{H}\parallel \mathbf{b}$ is characterized. Anisotropic scattering processes are evidenced and magnetic fluctuations are proposed to contribute, via a Kondo hybridization, to the electrical resistivity. Our work appeals for a microscopic modeling of the anisotropic contributions to the electrical resistivity as a milestone for understanding magnetically-mediated superconductivity in UTe${}_2$.

- Main text: 10 pages, 5 Figures and 60 References - Supplemental Material: 5 pages, 5 Figures, 1 Table and 11 References - there was a problem with Refs. in version 1 of the preprint, this is corrected in version 2 of the preprint

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Cited by in corpus (8)

• A review of UTe${}_2$ at high magnetic fields
• Longitudinal spin fluctuations driving field-reinforced superconductivity in UTe${}_2$
• c axis electrical transport at the metamagnetic transition in the heavy-fermion superconductor UTe2 under pressure
• Incommensurate antiferromagnetism in UTe2 under pressure
• Field-angle evolution of the superconducting and magnetic phases of UTe${}_2$ around the $b$ axis
• Metamagnetism in the high-pressure tetragonal phase of UTe${}_2$
• Slow magnetic quantum oscillations in the c-axis magnetoresistance of UTe${}_2$
• Boosted magnetic fluctuations at the onset of superconductivity in UTe${}_2$ beyond 40 T