Intrinsic low-temperature magnetic properties on the ultra-clean UTe$_2$ with $T_{\rm c}$ = 2.1 K revealed by $^{125}$Te NMR
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2025
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| _version_ | 1866915195263123456 |
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| author | Matsumura, Hiroki Kitagawa, Shunsaku Ogata, Shiki Matsubayashi, Riku Fujibayashi, Hiroki Kinjo, Katsuki Ishida, Kenji Tokunaga, Yo Sakai, Hironori Kambe, Shinsaku Nakamura, Ai Shimizu, Yusei Homma, Yoshiya Li, Dexin Honda, Fuminori Miyake, Atsushi Aoki, Dai |
| author_facet | Matsumura, Hiroki Kitagawa, Shunsaku Ogata, Shiki Matsubayashi, Riku Fujibayashi, Hiroki Kinjo, Katsuki Ishida, Kenji Tokunaga, Yo Sakai, Hironori Kambe, Shinsaku Nakamura, Ai Shimizu, Yusei Homma, Yoshiya Li, Dexin Honda, Fuminori Miyake, Atsushi Aoki, Dai |
| contents | To investigate the intrinsic magnetic properties of UTe$_2$, we performed $^{125}$Te-NMR measurements on the ultra-clean single-crystalline UTe$_2$ with superconducting transition temperature $T_{\rm c}$ = 2.1~K and compared the results with those of the $T_{\rm c}$ = 1.6~K sample. The broadening of the linewidth of the NMR spectrum in the $a$-axis magnetic field and the low-temperature magnetic fluctuations observed in the 1.6~K sample are suppressed in the ultra-clean sample, indicating that such magnetic properties originate from a tiny amount of U deficiency. The present results suggest that the magnetic properties in UTe$_2$ are sensitive to the U deficiency. We also observed a peculiar angular dependence of the NMR quantities due to large magnetic anisotropy with the $a$-axis as the magnetic easy axis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_09109 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Intrinsic low-temperature magnetic properties on the ultra-clean UTe$_2$ with $T_{\rm c}$ = 2.1 K revealed by $^{125}$Te NMR Matsumura, Hiroki Kitagawa, Shunsaku Ogata, Shiki Matsubayashi, Riku Fujibayashi, Hiroki Kinjo, Katsuki Ishida, Kenji Tokunaga, Yo Sakai, Hironori Kambe, Shinsaku Nakamura, Ai Shimizu, Yusei Homma, Yoshiya Li, Dexin Honda, Fuminori Miyake, Atsushi Aoki, Dai Superconductivity Strongly Correlated Electrons To investigate the intrinsic magnetic properties of UTe$_2$, we performed $^{125}$Te-NMR measurements on the ultra-clean single-crystalline UTe$_2$ with superconducting transition temperature $T_{\rm c}$ = 2.1~K and compared the results with those of the $T_{\rm c}$ = 1.6~K sample. The broadening of the linewidth of the NMR spectrum in the $a$-axis magnetic field and the low-temperature magnetic fluctuations observed in the 1.6~K sample are suppressed in the ultra-clean sample, indicating that such magnetic properties originate from a tiny amount of U deficiency. The present results suggest that the magnetic properties in UTe$_2$ are sensitive to the U deficiency. We also observed a peculiar angular dependence of the NMR quantities due to large magnetic anisotropy with the $a$-axis as the magnetic easy axis. |
| title | Intrinsic low-temperature magnetic properties on the ultra-clean UTe$_2$ with $T_{\rm c}$ = 2.1 K revealed by $^{125}$Te NMR |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2503.09109 |