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説明:

The recent discovery of the van der Waals (vdW) layered heavy fermion antiferromagnetic metal CeSiI offers promising potential for achieving accessible quantum criticality in the two-dimensional (2D) limit. CeSiI exhibits both heavy fermion behavior and antiferromagnetic (AFM) ordering, while the exact magnetic structure and phase diagram are yet to be determined. Here, we investigate the magnetic properties of atomically thin CeSiI devices with thicknesses ranging from 2 to 15 vdW layers. The thickness-dependent magnetotransport measurement reveals the intrinsic 2D nature of heavy fermion behavior and antiferromagnetism. Notably, we also find an isotropic, time-dependent hysteresis in both magnetoresistance and Hall resistance, showing glassy relaxation dynamics. This glassy behavior in magnetic structures may suggest the presence of spin glass phases or multipolar ordering, further establishing CeSiI as an intriguing material system for investigating the interplay between magnetic orders and the Kondo effect.

権利情報:

• In Copyright
  

  This document is the Accepted Manuscript version of a Published Article that appeared in final form in Nano Letters, copyright © 2025 American Chemical Society. To access the final published article see https://doi.org/10.1021/acs.nanolett.4c05920.

キーワード: Heavy fermion, Van der Waals layered materials, Quantum criticality

刊行年月日: 2025-04-30

出版者: American Chemical Society (ACS)

掲載誌:

• Nano Letters (ISSN: 15306984) vol. 25 issue. 17 p. 6848-6854

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI:

公開URL: https://doi.org/10.1021/acs.nanolett.4c05920

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更新時刻: 2026-07-02 17:25:53 +0900

MDRでの公開時刻: 2026-07-06 16:28:02 +0900