TY - JOUR
T1 - Two-Dimensional XY-Type Magnetic Properties of Locally Noncentrosymmetric Superconductor CeRh2As2
AU - Kitagawa, Shunsaku
AU - Kibune, Mayu
AU - Kinjo, Katsuki
AU - Manago, Masahiro
AU - Taniguchi, Takanori
AU - Ishida, Kenji
AU - Brando, Manuel
AU - Hassinger, Elena
AU - Geibel, Christoph
AU - Khim, Seunghyun
N1 - Funding Information:
Acknowledgments The authors would like to thank A. Ikeda for experimental supports, and K. Nogaki, Y. Yanase, S. Ogata, Y. Maeno, and S. Yonezawa for valuable discussions. This work was partially supported by the Kyoto University LTM Center, and Grants-in-Aid for Scientific Research (KAKENHI) (Grants Nos. JP15H05745, JP17K14339, JP19K14657, JP19H04696, and JP20H00130). C.G. and E.H. acknowledge support from the DFG through grant GE 602=4-1 Fermi-NEST.
Publisher Copyright:
© 2022 The Author(s)
PY - 2022/4/15
Y1 - 2022/4/15
N2 - We performed 75As-NMR measurements to investigate the normal-state magnetic properties of CeRh2As2, a recently-discovered heavy-fermion superconductor. The magnitude and temperature dependence of the Knight shift at the As(2) site indicate easy-plane-type magnetic anisotropy in CeRh2As2. With regard to spin fluctuations, the temperature dependence of the nuclear spin-lattice relaxation rate 1/T1 arising from the 4 f electrons decreases from high-temperature constant behavior on cooling at ∼40 K, which is a typical behavior of heavy-fermion systems. In addition, 1/T1 becomes constant at low temperatures, suggesting spatially two-dimensional antiferromagnetic fluctuations.
AB - We performed 75As-NMR measurements to investigate the normal-state magnetic properties of CeRh2As2, a recently-discovered heavy-fermion superconductor. The magnitude and temperature dependence of the Knight shift at the As(2) site indicate easy-plane-type magnetic anisotropy in CeRh2As2. With regard to spin fluctuations, the temperature dependence of the nuclear spin-lattice relaxation rate 1/T1 arising from the 4 f electrons decreases from high-temperature constant behavior on cooling at ∼40 K, which is a typical behavior of heavy-fermion systems. In addition, 1/T1 becomes constant at low temperatures, suggesting spatially two-dimensional antiferromagnetic fluctuations.
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U2 - 10.7566/JPSJ.91.043702
DO - 10.7566/JPSJ.91.043702
M3 - Article
AN - SCOPUS:85126545319
SN - 0031-9015
VL - 91
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 4
M1 - 043702
ER -