تقرير
Superconducting order parameter in UTe$_2$ determined by Knight shift measurement
| العنوان: | Superconducting order parameter in UTe$_2$ determined by Knight shift measurement |
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| المؤلفون: | Fujibayashi, Hiroki, Nakamine, Genki, Kinjo, Katsuki, Kitagawa, Shunsaku, Ishida, Kenji, Tokunaga, Yo, Sakai, Hironori, Kambe, Shinsaku, Nakamura, Ai, Shimizu, Yusei, Homma, Yoshiya, Li, Dexin, Honda, Fuminori, Aoki, Dai |
| المصدر: | J. Phys. Soc. Jpn. 91, 043705 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | This study investigates the spin susceptibility in U-based superconductor UTe$_2$ in the superconducting (SC) state by using Knight shift measurements for a magnetic field $H$ along the $a$ axis, which is the magnetic easy axis of UTe$_2$. Although a tiny anomaly ascribed to the SC diamagnetic effect was observed just below the SC transition temperature $T_{\rm c}$, the $a$-axis Knight shift in the SC state shows no significant decrease, following the extrapolation from the normal-state temperature dependence. This indicates that the spin susceptibility is nearly unchanged below $T_{\rm c}$. Considering the previous Knight shift results for $H \parallel b$ and $H \parallel c$, the dominant SC state is determined to be $B_{\rm 3u}$ in the spin-triplet pairing, which is consistent with the spin anisotropy in the normal state. The present result shows that UTe$_2$ is a spin-triplet superconductor with spin degrees of freedom. Comment: 6 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.7566/JPSJ.91.043705 |
| URL الوصول: | http://arxiv.org/abs/2203.08598 |
| رقم الأكسشن: | edsarx.2203.08598 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.7566/JPSJ.91.043705 |
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