Weak Kondo Coupling Antiferromagnet CePd3Sn2 with Quasi-One-Dimensional Ce Chains

Kawaue Yudai

Oishi Ryohei

Yang Chongli

Yamamoto Rikako

Shimura Yasuyuki

Umeo Kazunori

Onimaru Takahiro

Adroja Devashibhai T.

Walker Helen C.

Takabatake Toshiro

Journal of the Physical Society of Japan

CePd3Sn2 with Ce-chains along the orthorhombic b axis has been reported to order antiferromagnetically at TN ∼ 0.6 K. Above TN, the specific heat C(T) exhibits a long tail whose origin remains elusive. Here we report on the physical properties of single-crystalline samples inferred from electrical resistivity ρ(T), magnetization M(B), and C(T). The measurements reveal rather weak anisotropic properties characterized by the lowest ρ(T) and the highest saturation M(B) along the b axis. The ρ(T) data along the three principal directions exhibit no clear signature of Kondo scattering and decrease with negative curvatures on cooling from 2 K to TN = 0.67 K. The magnetic susceptibility and inelastic neutron scattering data are reproduced by the crystal electric field (CEF) model for the Ce3+ ion with two excited CEF doublets at rather low energies 27 and 191 K, respectively, above the ground state doublet. The isothermal M(B) curves at 0.3 K show metamagnetic transitions at B || b = 1.8 T and B || c = 1.5 T and upward increases before saturation for the three directions. The antiferromagnetic order is destroyed by the application of magnetic field in an anisotropic way at around B || b = 3 T, B || c = 4 T, and B || a = 5 T. The obtained results are discussed by comparing with those reported for quasi-one-dimensional Ce compounds.

英語

The Physical Society of Japan

This document is the Final Manuscript version of a Published Work that appeared in final form in Journal of the Physical Society of Japan, copyright © The Physical Society of Japan. The version of record 93, 034706 (2024)  is available online at: https://doi.org/10.7566/JPSJ.93.034706.

This is not the published version. Please cite only the published version.

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[DOI] https://doi.org/10.7566/JPSJ.93.034706 ～の異版である

日本学術振興会

Japan Society for the Promotion of Science

[Crossref Funder] https://doi.org/10.13039/501100001691

ハニカム近藤格子系におけるフラストレーション効果とキタエフ近藤物理

Frustration effect and Kitaev interaction in honeycomb Kondo lattice compounds

21K03473

日本学術振興会

Japan Society for the Promotion of Science

[Crossref Funder] https://doi.org/10.13039/501100001691

磁気揺らぎをもつ希土類金属間化合物が示す無秩序型量子相転移の検証 研究課題

磁気揺らぎをもつ希土類金属間化合物が示す無秩序型量子相転移の検証 研究課題

22K03529

日本学術振興会

Japan Society for the Promotion of Science

[Crossref Funder] https://doi.org/10.13039/501100001691

近藤効果とフラストレーションが共存するハニカム格子系における量子相転移の研究

近藤効果とフラストレーションが共存するハニカム格子系における量子相転移の研究

22KJ2336

日本学術振興会

Japan Society for the Promotion of Science

[Crossref Funder] https://doi.org/10.13039/501100001691

アシンメトリ量子物質の深化

Development of Archetypal Asymmetric Quantum Matters

23H04870