Metamagnetic ripples in the UTe2 high magnetic field phase diagram
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909537360936960 |
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| author | Wu, Zheyu Chen, Hanyi Long, Mengmeng Jin, Gangjian Zuo, Huakun Shaffer, Daniel Chichinadze, Dmitry V. Cabala, Andrej Sechovsky, Vladimir Valiska, Michal Zhu, Zengwei Lonzarich, Gilbert G. Grosche, F. Malte Eaton, Alexander G. |
| author_facet | Wu, Zheyu Chen, Hanyi Long, Mengmeng Jin, Gangjian Zuo, Huakun Shaffer, Daniel Chichinadze, Dmitry V. Cabala, Andrej Sechovsky, Vladimir Valiska, Michal Zhu, Zengwei Lonzarich, Gilbert G. Grosche, F. Malte Eaton, Alexander G. |
| contents | The heavy fermion metamagnet uranium ditelluride possesses two distinct magnetic field--induced superconducting states. One of these superconductive phases resides at magnetic fields immediately below a first-order metamagnetic transition to a field--polarized paramagnetic state at a field strength $H_m$, while the other exists predominantly above $H_m$. However, little is known about the microscopic properties of this polarized paramagnetic state. Here we report pulsed magnetic field measurements tracking the evolution of $H_m$ for polar and azimuthal inclinations in the vicinity of the crystallographic $b-a$ plane. We uncover a region of the phase diagram at high fields $>$ 50 T with a ripple-like non-monotonic dependence of $H_m$ on the orientation of field. Within this ripple in the metamagnetic transition surface, $H_m$ exhibits an anomalous temperature dependence. Our results point towards the presence of complex magnetic interactions and possible magnetic sub-phases at high magnetic fields in UTe$_2$, which may have important implications for the manifestation of exotic field-induced superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_11362 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Metamagnetic ripples in the UTe2 high magnetic field phase diagram Wu, Zheyu Chen, Hanyi Long, Mengmeng Jin, Gangjian Zuo, Huakun Shaffer, Daniel Chichinadze, Dmitry V. Cabala, Andrej Sechovsky, Vladimir Valiska, Michal Zhu, Zengwei Lonzarich, Gilbert G. Grosche, F. Malte Eaton, Alexander G. Strongly Correlated Electrons Superconductivity The heavy fermion metamagnet uranium ditelluride possesses two distinct magnetic field--induced superconducting states. One of these superconductive phases resides at magnetic fields immediately below a first-order metamagnetic transition to a field--polarized paramagnetic state at a field strength $H_m$, while the other exists predominantly above $H_m$. However, little is known about the microscopic properties of this polarized paramagnetic state. Here we report pulsed magnetic field measurements tracking the evolution of $H_m$ for polar and azimuthal inclinations in the vicinity of the crystallographic $b-a$ plane. We uncover a region of the phase diagram at high fields $>$ 50 T with a ripple-like non-monotonic dependence of $H_m$ on the orientation of field. Within this ripple in the metamagnetic transition surface, $H_m$ exhibits an anomalous temperature dependence. Our results point towards the presence of complex magnetic interactions and possible magnetic sub-phases at high magnetic fields in UTe$_2$, which may have important implications for the manifestation of exotic field-induced superconductivity. |
| title | Metamagnetic ripples in the UTe2 high magnetic field phase diagram |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2503.11362 |