دورية أكاديمية
Field-reentrant superconductivity close to a metamagnetic transition in the heavy-fermion superconductor UTe$_2$
| العنوان: | Field-reentrant superconductivity close to a metamagnetic transition in the heavy-fermion superconductor UTe$_2$ |
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| المؤلفون: | Knebel, Georg, Knafo, William, Pourret, Alexandre, Niu, Qun, Vališka, Michal, Braithwaite, Daniel, Lapertot, Gérard, Nardone, Marc, Zitouni, Abdelaziz, Mishra, Sanu, Sheikin, Ilya, Seyfahrt, Gabriel, Brison, Jean-Pascal, Aoki, Dai, Flouquet, Jacques |
| سنة النشر: | 2019 |
| المجموعة: | ArXiv.org (Cornell University Library) |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We present a study of the upper critical field of the newly discovered heavy fermion superconductor UTe$_2$ by magnetoresistivity measurements in pulsed magnetic fields up to 60~T and static magnetic fields up to 35~T. We show that superconductivity survives up to the metamagnetic transition at $H_{\rm m} \approx 35$~T at low temperature. Above $H_{\rm m}$ superconductivity is suppressed. At higher temperature superconductivity is enhanced under magnetic field leading to reentrance of superconductivity or an almost temperature independent increase of $H_{\rm c2}$. By studying the angular dependence of the upper critical field close to the $b$ axis (hard magnetization axis) we show that the maximum of the reentrant superconductivity temperature is depinned from the metamagnetic field. A key ingredient for the field-reinforcement of superconductivity on approaching $H_{\rm m}$ appears to be an immediate interplay with magnetic fluctuations and a possible Fermi-surface reconstruction. ; Comment: 5 pages + Supplemental Material, accepted for publication in J. Phys. Soc. Jpn |
| نوع الوثيقة: | text |
| اللغة: | unknown |
| العلاقة: | http://arxiv.org/abs/1905.05181Test; J. Phys. Soc. Jpn. 88, 063707 (2019) |
| DOI: | 10.7566/JPSJ.88.063707 |
| الإتاحة: | https://doi.org/10.7566/JPSJ.88.063707Test http://arxiv.org/abs/1905.05181Test |
| رقم الانضمام: | edsbas.4B2A0F9E |
| قاعدة البيانات: | BASE |
| DOI: | 10.7566/JPSJ.88.063707 |
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