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Anisotropic signatures of the electronic correlations in the electrical resistivity of UTe$_2$
| العنوان: | Anisotropic signatures of the electronic correlations in the electrical resistivity of UTe$_2$ |
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| المؤلفون: | Thebault, T., Knafo, W., Vališka, M., Lapertot, G., Pourret, A., Aoki, D., Knebel, G., Braithwaite, D. |
| المصدر: | Phys. Rev. B 106, 144406 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Superconductivity |
| الوصف: | 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 $\mu_0H_m\simeq35$~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$_2$. Comment: - 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 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.106.144406 |
| URL الوصول: | http://arxiv.org/abs/2205.15789 |
| رقم الانضمام: | edsarx.2205.15789 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.106.144406 |
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