# Probing moiré Bloch bands of photoexcited electrons on graphene/Ir(111)

https://mdr.nims.go.jp/datasets/e41edaba-f1cb-43ae-8ce8-fc536d0ee567

## File

- [gap_graphene_ir.pdf](https://mdr.nims.go.jp/filesets/4fc5c39b-3ab5-4031-927a-33970b6f8e8b/download) ([Detail](https://mdr.nims.go.jp/filesets/4fc5c39b-3ab5-4031-927a-33970b6f8e8b.md))

## Id

e41edaba-f1cb-43ae-8ce8-fc536d0ee567

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-10-27T07:25:43.071303Z

## Updated at

2025-10-28T03:30:42.511301Z

## Published at

2025-10-28T03:16:25.385137Z

## Doi

https://doi.org/10.48505/nims.5830

## First published url

https://doi.org/10.1103/yg4g-x51r

## Date published

2025-10-24

## Recorded date published

2025-10

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: Probing moiré Bloch bands of photoexcited electrons on graphene/Ir(111)
  title_type: original
  lang: en

## Description

- description: "We have investigated the moir\\'{e} Bloch bands of photoexcited electrons
    in image potential states (IPS) on graphene covered Ir(111) surfaces using high-energy-resolution
    angle-resolved two-photon photoemission spectroscopy. An energy gap of approximately
    20 meV at the K point of the moiré Brillouin zone is resolved. The band structure
    is well reproduced by density functional theory (DFT) combined with the embedded
    Green’s function technique. A simplified periodic potential model, whose spatial
    distribution shows close agreement with the DFT results, also describes the system
    well. These findings  demonstrate  that  the electronic band structure of photoexcited
    states can be engineered solely via moiré potential modulation. This opens a new
    avenue for excited-state band engineering and the design of ultrafast optoelectronic
    functionalities in moiré-engineered materials.\r\n"
  description_type: abstract
  lang: und

## Creator

- name: Ryuichi Arafune
  role: author
  orcid: https://orcid.org/0000-0003-4371-6116
- name: Hiroshi Ishida
  role: author
  orcid: https://orcid.org/0000-0003-2080-1561
- name: Chun-Liang Lin
  role: author
  orcid: https://orcid.org/0000-0001-8781-3650
- name: Noriaki Takagi
  role: author
  orcid: https://orcid.org/0000-0002-0799-9772

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: moire
  schema: not_defined
- subject: two-photon photoemission
  schema: not_defined
- subject: Unoccupied state
  schema: not_defined

## Rights

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

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## Embargo



## Journal

- title: Physical Review B
  issn: '24699950'
  volume: '112'
  issue: '16'
  article_number: L161408

## Conference



## Related item



## Funding

- identifier: 22H01960
  funder_name: Japan Society for the Promotion of Science
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: NSTC 114–2923-M-A49-001-MY2
  funder_name: National Science and Technology Council
- identifier: NSTC 113–2124-M-A49-007
  funder_name: National Science and Technology Council
- identifier: NSTC 113–2628-M-A49-006-MY3
  funder_name: National Science and Technology Council
- identifier: NSTC 114–2634-F-A49-001
  funder_name: National Science and Technology Council

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Computational method



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## Fileset

- id: 4fc5c39b-3ab5-4031-927a-33970b6f8e8b
  filename: gap_graphene_ir.pdf
  content_type: application/pdf
  size: 4072909
  md5: ffb0c42d37bba4c6f524f05d99cbfcd1

## Thumbnail

fileset_id: 4fc5c39b-3ab5-4031-927a-33970b6f8e8b
filename: gap_graphene_ir.pdf