# On-surface synthesis of Heisenberg spin-1/2 antiferromagnetic molecular chains

https://mdr.nims.go.jp/datasets/ba54e37b-bccc-46db-bfeb-68d1f053d0e1

## File

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## Id

ba54e37b-bccc-46db-bfeb-68d1f053d0e1

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-05T02:51:43.607726Z

## Updated at

2025-03-06T03:30:14.765682Z

## Published at

2025-03-06T03:30:15.897386Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.ads1641

## Date published

2025-02-28

## Recorded date published

2025-2-28

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: On-surface synthesis of Heisenberg spin-1/2 antiferromagnetic molecular chains
  title_type: original
  lang: en

## Description

- description: Magnetic exchange interactions between localized spins in π-electron
    magnetism of carbon-based nanostructures have attracted tremendous interest due
    to their great potential for nano spintronics. Unique many-body quantum characteristics,
    such as gaped excitations, strong spin entanglement, and fractionalized excitations,
    have been demonstrated, but the spin-1/2 Heisenberg model with a single antiferromagnetic
    coupling J value remained unexplored. Here, we realized the entangled antiferromagnetic
    quantum spin-1/2 Heisenberg model with diazahexabenzocoronene oligomers (up to
    7 units) on Au(111). Extensive low-temperature scanning tunneling microscopy/spectroscopy
    measurements and density functional theory and many-body calculations show that
    even-numbered spin chains host a collective state with gapped excitations, while
    odd-numbered chains feature a Kondo excitation. We found that a given antiferromagnetic
    coupling J value between first neighbors in the entangled quantum states is responsible
    for the quantum p
  description_type: abstract
  lang: en

## Creator

- name: Kewei Sun
  role: author
  orcid: https://orcid.org/0000-0002-1835-243X
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Nan Cao
  role: author
  organization: Aalto University
- name: Orlando J. Silveira
  role: author
  organization: Aalto University
- name: Adolfo O. Fumega
  role: author
  organization: Aalto University
- name: Fiona Hanindita
  role: author
  organization: Nanyang Technological University
- name: Shingo Ito
  role: author
  organization: Nanyang Technological University
- name: Jose L. Lado
  role: author
  organization: Aalto University
- name: Peter Liljeroth
  role: author
  organization: Aalto University
- name: Adam S. Foster
  role: author
  organization: Aalto University
- name: Shigeki Kawai
  role: author
  orcid: https://orcid.org/0000-0003-2128-0120
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: American Association for the Advancement of Science (AAAS)

## Managing organization



## Keyword

- subject: scanning tunneling microscopy/spectroscopy
  schema: not_defined
- subject: spin-1/2 Heisenberg model
  schema: not_defined
- subject: diazahexabenzocoronene oligomers
  schema: not_defined
- subject: topological spin lattices
  schema: not_defined
- subject: entangled quantum states
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: SCIENCE ADVANCES
  issn: '23752548'
  volume: '11'
  issue: '9'

## Conference



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## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



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## Fileset

- id: 4743aefd-e09b-47a6-a877-1be90c6fdf64
  filename: 20250305 sciadv.ads1641.pdf
  content_type: application/pdf
  size: 4080788
  md5: 1728435eaa8c168b874df4c47b0a0e7e
- id: 85f9df51-8739-4903-8199-2e8b7a7e005f
  filename: 20250305 sciadv.ads1641_sm.pdf
  content_type: application/pdf
  size: 15884640
  md5: 8ded98ac58657d1e3bba3dfcc62258bd

## Thumbnail

fileset_id: 4743aefd-e09b-47a6-a877-1be90c6fdf64
filename: 20250305 sciadv.ads1641.pdf