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

Shunsaku Kitagawa; Mayu Kibune; Katsuki Kinjo; Masahiro Manago; Takanori Taniguchi; Kenji Ishida; Manuel Brando; Elena Hassinger; Christoph Geibel; Seunghyun Khim

doi:10.7566/JPSJ.91.043702

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

Shunsaku Kitagawa
, Mayu Kibune
, Katsuki Kinjo
, Masahiro Manago
, Takanori Taniguchi
, Kenji Ishida
, Manuel Brando
, Elena Hassinger
, Christoph Geibel
, Seunghyun Khim

Graduate School of Science
Shimane Medical University
Tohoku University
Max Planck Institute for Chemical Physics of Solids

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

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.

Original language	English
Article number	043702
Journal	Journal of the Physical Society of Japan
Volume	91
Issue number	4
DOIs	https://doi.org/10.7566/JPSJ.91.043702
State	Published - 15 Apr 2022
Externally published	Yes

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title = "Two-Dimensional XY-Type Magnetic Properties of Locally Noncentrosymmetric Superconductor CeRh2As2",

abstract = "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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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

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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JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

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ER -

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

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