# Glassy Relaxation Dynamics in the Two-Dimensional Heavy Fermion Antiferromagnet CeSiI

https://mdr.nims.go.jp/datasets/e87c8a40-902d-48dc-a692-a35190e2901b

## File

- [2025A00612G_CeSiI_Revision_KT_v1_JY_PK.pdf](https://mdr.nims.go.jp/filesets/20782fa4-2a38-42ab-9956-b14b3ee9d317/download) ([Detail](https://mdr.nims.go.jp/filesets/20782fa4-2a38-42ab-9956-b14b3ee9d317.md))

## Id

e87c8a40-902d-48dc-a692-a35190e2901b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-01T07:18:27.200912Z

## Updated at

2026-07-02T08:25:53.272844Z

## Published at

2026-07-06T07:28:02.471290Z

## Doi



## First published url

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

## Date published

2025-04-30

## Recorded date published

2025-4-30

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Glassy Relaxation Dynamics in the Two-Dimensional Heavy Fermion Antiferromagnet
    CeSiI
  title_type: original
  lang: en

## Description

- description: 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.
  description_type: abstract
  lang: en

## Creator

- name: Kierstin Torres
  role: author
- name: Joon Young Park
  role: author
  orcid: https://orcid.org/0009-0001-6967-2767
- name: Victoria A. Posey
  role: author
- name: Michael E. Ziebel
  role: author
  orcid: https://orcid.org/0000-0003-1857-8292
- name: Claire E. Casaday
  role: author
  orcid: https://orcid.org/0000-0002-9238-0463
- name: Kevin J. Anderton
  role: author
- name: Dongtao Cui
  role: author
- name: Benjamin Tang
  role: author
  orcid: https://orcid.org/0009-0000-6940-8344
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: Abhay N. Pasupathy
  role: author
  orcid: https://orcid.org/0000-0002-2744-0634
- name: Xavier Roy
  role: author
  orcid: https://orcid.org/0000-0002-8850-0725
- name: Philip Kim
  role: author
  orcid: https://orcid.org/0000-0002-8255-0086

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Heavy fermion
  schema: not_defined
- subject: Van der Waals layered materials
  schema: not_defined
- subject: Quantum criticality
  schema: not_defined

## Rights

- description: 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.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-04-16
end_date: 2026-04-16

## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '25'
  issue: '17'
  start_page: 6848
  end_page: 6854

## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 20782fa4-2a38-42ab-9956-b14b3ee9d317
  filename: 2025A00612G_CeSiI_Revision_KT_v1_JY_PK.pdf
  content_type: application/pdf
  size: 740815
  md5: 5741fda6899bafc642891b09a509039d

## Thumbnail

fileset_id: 20782fa4-2a38-42ab-9956-b14b3ee9d317
filename: 2025A00612G_CeSiI_Revision_KT_v1_JY_PK.pdf