# High-yield fabrication of bubble-free magic-angle twisted bilayer graphene devices with high twist-angle homogeneity

https://mdr.nims.go.jp/datasets/46235ba3-0758-4b29-97b8-1c98631c3296

## File

- [Main_PIIS2950636024000070.pdf](https://mdr.nims.go.jp/filesets/cb075563-e447-4f91-bd54-8e75267f2e83/download) ([Detail](https://mdr.nims.go.jp/filesets/cb075563-e447-4f91-bd54-8e75267f2e83.md))

## Id

46235ba3-0758-4b29-97b8-1c98631c3296

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-02-28T10:30:44.492524Z

## Updated at

2026-03-02T23:30:18.887321Z

## Published at

2026-03-02T08:20:28.431437Z

## Doi



## First published url

https://doi.org/10.1016/j.newton.2024.100007

## Date published

2025-01-14

## Recorded date published

2025-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: High-yield fabrication of bubble-free magic-angle twisted bilayer graphene
    devices with high twist-angle homogeneity
  title_type: original
  lang: en

## Description

- description: Magic-angle twisted bilayer graphene (MATBG) stands as one of the most
    versatile materials in condensed-matter physics due to its hosting of a wide variety
    of exotic phases while also offering convenient tunability. However, the fabrication
    of MATBG is still manual, and remains to be a challenging and inefficient process,
    with devices being highly dependent on specific fabrication methods, that often
    result in inconsistency and variability. In this work, we present an optimized
    protocol for the fabrication of MATBG samples, for which we use deterministic
    graphene anchoring to stabilize the twist-angle, and a careful bubble removal
    techniques to ensure a high twist-angle homogeneity. We use low-temperature transport
    experiments to extract the average twist-angle between pairs of leads. We find
    that up to ~ 38% of the so fabricated devices show μ m2 sized regions with a twist-angle
    in the range θ = 1.1 ± 0.1 ⁰ ,  and a twist-angle variation of only Δθ ≤ 0.02⁰
    , where in some instances such regions were up to 36 μ m2 large. We are certain
    that the discussed protocols can be directly transferred to non-graphene materials,
    and will be useful for the growing field of moiré materials.
  description_type: abstract
  lang: und

## Creator

- name: Jaime Díez-Mérida
  role: author
- name: Ipsita Das
  role: author
- name: Giorgio Di Battista
  role: author
- name: Andrés Díez-Carlón
  role: author
- name: Martin Lee
  role: author
- name: Lunjie Zeng
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Eva Olsson
  role: author
- name: Dmitri K. Efetov
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: 'magic-angle twisted bilayer graphene (MATBG)
    '
  schema: not_defined
- subject: 'fabrication protocol
    '
  schema: not_defined
- subject: 'twist-angle homogeneity
    '
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-01-14

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Newton
  volume: '1'
  issue: '1'
  article_number: '100007'

## Conference



## Related item



## Funding

- identifier: '2019.0140'
  funder_name: Knut och Alice Wallenbergs Stiftelse
- identifier: 19H05790
  funder_name: Japan Society for the Promotion of Science
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: 2021-00171
  funder_name: Stiftelsen för Strategisk Forskning
- identifier: RIF21-0026
  funder_name: Stiftelsen för Strategisk Forskning
- identifier: '852927'
  funder_name: Horizon 2020 Framework Programme
- identifier: '101099139'
  funder_name: HORIZON EUROPE European Innovation Council
- identifier: '535146365'
  funder_name: Deutsche Forschungsgemeinschaft
- funder_name: European Research Council
- funder_name: Vetenskapsrådet
- identifier: JPMXP0112101001
  funder_name: Ministry of Education, Culture, Sports, Science and Technology

## Instrument



## Instrument operator



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## 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



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## Custom property



## Fileset

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  filename: Main_PIIS2950636024000070.pdf
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## Thumbnail

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filename: Main_PIIS2950636024000070.pdf