Electronic fluctuations in the normal state of UTe

Tokunaga, Yo  ; Sakai, Hironori   ; Kambe, Shinsaku  ; Opletal, P.  ; Tokiwa, Yoshifumi  ; Haga, Yoshinori   ; Fujibayashi, Hiroki*; Kinjo, Katsuki*; Kitagawa, Shunsaku*; Ishida, Kenji*; Sato, Yoshiki*; Nakamura, Ai*; Shimizu, Yusei*; Li, D.*; Homma, Yoshiya*; Honda, Fuminori*; Aoki, Dai*

We report the results of Te NMR measurements in field () applied along the easy magnetization axis (the -axis). The experiments revealed slow electronic dynamics developing in the paramagnetic state of UTe. The observed slow fluctuations are concerned with a successive growth of long-range electronic correlations below 3040 K, where the spin susceptibility along the hard magnetization axis (the -axis) shows a broad maximum. The experiments also imply that tiny amounts of disorder or defects locally disturb the long-range electronic correlations and develop an inhomogeneous electronic state at low temperatures, leading to a low temperature upturn observed in the bulk-susceptibility in .