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  Two-Dimensional XY-Type Magnetic Properties of Locally Noncentrosymmetric Superconductor CeRh2As2

Kitagawa, S., Kibune, M., Kinjo, K., Manago, M., Taniguchi, T., Ishida, K., et al. (2022). Two-Dimensional XY-Type Magnetic Properties of Locally Noncentrosymmetric Superconductor CeRh2As2. Journal of the Physical Society of Japan, 91(4): 043702, pp. 1-5. doi:10.7566/JPSJ.91.043702.

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 Creators:
Kitagawa, Shunsaku1, Author
Kibune, Mayu1, Author
Kinjo, Katsuki1, Author
Manago, Masahiro1, Author
Taniguchi, Takanori1, Author
Ishida, Kenji1, Author
Brando, Manuel2, Author              
Hassinger, Elena3, Author              
Geibel, Christoph4, Author              
Khim, Seunghyun5, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Manuel Brando, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863469              
3Physics of Unconventional Metals and Superconductors, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466700              
4Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
5Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: We performed "As-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/T-1 arising from the 4f electrons decreases from high-temperature constant behavior on cooling at similar to 40K, which is a typical behavior of heavy-fermion systems. In addition, 1/T-1 becomes constant at low temperatures, suggesting spatially two-dimensional antiferromagnetic fluctuations. Two-dimensional magnetic correlations in the real space are quite rare among heavy-fermion superconductors, and they may be a key factor in the unique superconducting multi phase in CeRh2As2.

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Language(s): eng - English
 Dates: 2022-03-042022-03-04
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: ISI: 000785988000012
DOI: 10.7566/JPSJ.91.043702
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Title: Journal of the Physical Society of Japan
Source Genre: Journal
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Publ. Info: Tokyo : The Society
Pages: - Volume / Issue: 91 (4) Sequence Number: 043702 Start / End Page: 1 - 5 Identifier: ISSN: 0031-9015
CoNE: https://pure.mpg.de/cone/journals/resource/954925433407