Intrinsic low-temperature magnetic properties on ultraclean UTe₂ with 𝑇𝑐=2.1 K revealed by ¹²⁵Te NMR
Year: 2025
Type: article
Abstract: To investigate the intrinsic magnetic properties of UTe₂, we performed ¹²⁵Te-NMR measurements on the ultraclean single-crystalline UTe₂ with superconducting transition temperature 𝑇𝑐=2.1 K and compared the results with those of the 𝑇𝑐=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 ultraclean sample, indicating that such magnetic properties originate from a tiny amount of U deficiency. The present results suggest that the magnetic properties in UTe₂ 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.
Authors: 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
Institution: Kyoto University
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7113655286
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