Strange metallicity encompasses high magnetic field-induced superconductivity in UTe2
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arXiv
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| Autores principales: | , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866918023757037568 |
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| author | Weinberger, T. I. Chen, H. Wu, Z. Long, M. Cabala, A. Skourski, Y. Sourd, J. Haidamak, T. Sechovsky, V. Valiska, M. Grosche, F. M. Eaton, A. G. |
| author_facet | Weinberger, T. I. Chen, H. Wu, Z. Long, M. Cabala, A. Skourski, Y. Sourd, J. Haidamak, T. Sechovsky, V. Valiska, M. Grosche, F. M. Eaton, A. G. |
| contents | The heavy fermion material UTe$_2$ hosts a suite of exotic superconducting phases, the most extreme of which resides in a narrow angular window of intense magnetic fields $>$ 40 T. Here we report that in the angular and field regime in which field-induced superconductivity is most robust, the normal-state resistivity exhibits a linear temperature dependence characteristic of strange metallicity, sharply contrasting with the Fermi-liquid behavior observed at low fields and away from this angular window. Through angle-dependent magnetotransport measurements in high magnetic fields, we find that the strange metal state is confined to a narrow angular range where field-induced superconductivity is also maximized, suggesting a shared underlying mechanism. These findings reveal a novel setting for strange metallicity - proximate to spin-triplet, field-induced superconductivity - and point to the presence of quantum critical fluctuations, likely of a magnetic origin. The coexistence of strange metallicity and putatively spin-triplet pairing challenges prevailing paradigms of non-Fermi-liquid phenomenology, and highlights UTe$_2$ as a unique platform for exploring the interplay between unconventional superconductivity and quantum criticality. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_12131 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Strange metallicity encompasses high magnetic field-induced superconductivity in UTe2 Weinberger, T. I. Chen, H. Wu, Z. Long, M. Cabala, A. Skourski, Y. Sourd, J. Haidamak, T. Sechovsky, V. Valiska, M. Grosche, F. M. Eaton, A. G. Strongly Correlated Electrons The heavy fermion material UTe$_2$ hosts a suite of exotic superconducting phases, the most extreme of which resides in a narrow angular window of intense magnetic fields $>$ 40 T. Here we report that in the angular and field regime in which field-induced superconductivity is most robust, the normal-state resistivity exhibits a linear temperature dependence characteristic of strange metallicity, sharply contrasting with the Fermi-liquid behavior observed at low fields and away from this angular window. Through angle-dependent magnetotransport measurements in high magnetic fields, we find that the strange metal state is confined to a narrow angular range where field-induced superconductivity is also maximized, suggesting a shared underlying mechanism. These findings reveal a novel setting for strange metallicity - proximate to spin-triplet, field-induced superconductivity - and point to the presence of quantum critical fluctuations, likely of a magnetic origin. The coexistence of strange metallicity and putatively spin-triplet pairing challenges prevailing paradigms of non-Fermi-liquid phenomenology, and highlights UTe$_2$ as a unique platform for exploring the interplay between unconventional superconductivity and quantum criticality. |
| title | Strange metallicity encompasses high magnetic field-induced superconductivity in UTe2 |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2505.12131 |