Anomalous magnetic transition in a disordered quasicrystal approximant with heavy-fermion nature

Takayuki Shiino; Farid Labib; Yuma Hirano; Kazuhiko Deguchi; Keiichiro Imura; Takanori Sugimoto; Satoshi Ohhashi; Nobuhisa Fujita; An-Pang Tsai; Noriaki K. Sato

doi:10.1103/hsw7-7y3b

Anomalous magnetic transition in a disordered quasicrystal approximant with heavy-fermion nature

Takayuki Shiino ^1,*,†,‡, Farid Labib^2,*, Yuma Hirano¹, Kazuhiko Deguchi ¹, Keiichiro Imura ³, Takanori Sugimoto^4,5,6, Satoshi Ohhashi ⁷, Nobuhisa Fujita ⁷, An-Pang Tsai⁷ et al.

Noriaki K. Sato^1,§

¹Department of Physics, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
²Research Institute of Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
³Institute of Liberal Arts and Sciences, Nagoya University, Nagoya 464-8601, Japan
⁴Center for Quantum Information and Quantum Biology, The University of Osaka, Toyonaka, Osaka 560-8531, Japan
⁵Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
⁶Computational Materials Science Research Team, Riken Center for Computational Science (R-CCS), Kobe, Hyogo 650-0047, Japan
⁷Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai 980-8577, Japan

^*These authors contributed equally to this work.
^†Contact author: neomi.taka.shin@gmail.com
^‡Present address: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat. Autònoma de Barcelona, 08193 Bellaterra, Spain.
^§Present address: Center for General Education, Aichi Institute of Technology, Toyota, Aichi 470-0392, Japan.

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Phys. Rev. B 112, 064418 – Published 11 August, 2025

DOI: https://doi.org/10.1103/hsw7-7y3b

Abstract

Quasicrystal approximant $({Ce}_{x} Y_{1 - x}) {Cd}_{6}$ ( $0 \leq x \leq 1$ ) forms a magnetic frustration network of corner-sharing octahedra. We report that $({Ce}_{0.8} Y_{0.2}) {Cd}_{6}$ exhibits an anomalous magnetic transition that can be classified as neither conventional static magnetic ordering nor a spin glass. The anomalous transition is characterized by the coexistence of a static order and a frequency-dependent sharp positive anomalous peak in the third-harmonic susceptibility. Based on investigations of the reference systems ${CeCd}_{6}$ and $({Ce}_{0.05} Y_{0.95}) {Cd}_{6}$ , it is suggested that the anomalous transition is induced by disorder in the potentially frustrated octahedral network system in the presence of the Kondo effect.

Physical Review B

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Anomalous magnetic transition in a disordered quasicrystal approximant with heavy-fermion nature

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Anomalous magnetic transition in a disordered quasicrystal approximant with heavy-fermion nature

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