TY - JOUR
T1 - Slow Electronic Dynamics in the Paramagnetic State of UTe2
AU - Tokunaga, Yo
AU - Sakai, Hironori
AU - Kambe, Shinsaku
AU - Haga, Yoshinori
AU - Tokiwa, Yoshifumi
AU - Opletal, Petr
AU - Fujibayashi, Hiroki
AU - Kinjo, Katsuki
AU - Kitagawa, Shunsaku
AU - Ishida, Kenji
AU - Nakamura, Ai
AU - Shimizu, Yusei
AU - Homma, Yoshiya
AU - Li, Dexin
AU - Honda, Fuminori
AU - Aoki, Dai
N1 - Funding Information:
Acknowledgements We are grateful for stimulating discussions with Y. Yanase, W. Knafo, J. P. Brison, J. Flouquet, M. Horvatić, M.-H. Julien, M. Hirata, and V. P. Mineev. A part of this work was supported by JSPS KAKENHI Grant Numbers 19K03726, 19H00646, 20H00130, and 20KK0061.
Publisher Copyright:
© 2022 The Physical Society of Japan.
PY - 2022/2/15
Y1 - 2022/2/15
N2 - 125Te 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 30-40 K, 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 Π 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.
AB - 125Te 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 30-40 K, 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 Π 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.
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U2 - 10.7566/JPSJ.91.023707
DO - 10.7566/JPSJ.91.023707
M3 - Article
AN - SCOPUS:85124235150
SN - 0031-9015
VL - 91
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 2
M1 - 023707
ER -