Slow Electronic Dynamics in the Paramagnetic State of UTe2

被引：27

作者：

Tokunaga, Yo ^{[1
]}

Sakai, Hironori ^{[1
]}

Kambe, Shinsaku ^{[1
]}

Haga, Yoshinori ^{[1
]}

Tokiwa, Yoshifumi ^{[1
]}

Opletal, Petr ^{[1
]}

Fujibayashi, Hiroki ^{[2
]}

Kinjo, Katsuki ^{[2
]}

Kitagawa, Shunsaku ^{[2
]}

Ishida, Kenji ^{[2
]}

Nakamura, Ai ^{[3
]}

Shimizu, Yusei ^{[3
]}

Homma, Yoshiya ^{[3
]}

Li, Dexin ^{[3
]}

Honda, Fuminori ^{[3
,4
]}

Aoki, Dai ^{[3
,5
]}

机构：

[1] Japan Atom Energy Agcy, ASRC, Tokai, Ibaraki 3191195, Japan

[2] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[3] Tohoku Univ, IMR, Oarai, Ibaraki 3111313, Japan

[4] Kyushu Univ, Cent Inst Radioisotope Sci & Safety, Fukuoka 8190395, Japan

[5] Univ Grenoble Alpes, IRIG PHELIQS, CEA, F-38000 Grenoble, France

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2022年 / 91卷 / 02期

关键词：

NMR; ORDER;

D O I：

10.7566/JPSJ.91.023707

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Te-125 NMR experiments in field (H) applied along the easy magnetization axis (the a-axis) revealed slow electronic dynamics developing in the paramagnetic state of UTe2. The observed slow fluctuations are concerned with a successive growth of long-range electronic correlations below 30-40K, where the spin susceptibility along the hard magnetization axis (the b-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 H parallel to a. We suggest that UTe2 would be located on the paramagnetic side near an electronic phase boundary, where either magnetic or Fermi-surface instability would be the origin of the characteristic fluctuations.

引用

页数：5

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