تقرير
Two-dimensional XY-type Magnetic Properties of Locally Noncentrosymmetric Superconductor CeRh$_2$As$_2$
| العنوان: | Two-dimensional XY-type Magnetic Properties of Locally Noncentrosymmetric Superconductor CeRh$_2$As$_2$ |
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| المؤلفون: | Kitagawa, Shunsaku, Kibune, Mayu, Kinjo, Katsuki, Manago, Masahiro, Taniguchi, Takanori, Ishida, Kenji, Brando, Manuel, Hassinger, Elena, Geibel, Christoph, Khim, Seunghyun |
| المصدر: | J. Phys. Soc. Jpn. 91, 043702 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We performed $^{75}$As-NMR measurements to investigate the normal-state magnetic properties of CeRh$_2$As$_2$, 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 CeRh$_2$As$_2$. With regard to spin fluctuations, the temperature dependence of the nuclear spin-lattice relaxation rate $1/T_1$ arising from the 4$f$ electrons decreases from high-temperature constant behavior on cooling at $\sim$ 40~K, which is 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 CeRh$_2$As$_2$. Comment: 5 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.7566/JPSJ.91.043702 |
| URL الوصول: | http://arxiv.org/abs/2203.03184 |
| رقم الأكسشن: | edsarx.2203.03184 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.7566/JPSJ.91.043702 |
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