# Deterministic fabrication of graphene hexagonal boron nitride moiré superlattices

https://mdr.nims.go.jp/datasets/e493a2ff-d1ea-4b79-a475-29d0423ae831

## File

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## Id

e493a2ff-d1ea-4b79-a475-29d0423ae831

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-05T00:13:49.291373Z

## Updated at

2025-02-05T03:31:29.105494Z

## Published at

2025-02-05T03:31:29.187331Z

## Doi



## First published url

https://doi.org/10.1073/pnas.2410993121

## Date published

2024-09-27

## Recorded date published

2024-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Deterministic fabrication of graphene hexagonal boron nitride moiré superlattices
  title_type: original
  lang: en

## Description

- description: "The electronic properties of moiré heterostructures depend sensitively
    on the relative orientation between layers of the stack. As one example, near-magic-angle
    twisted bilayer graphene (TBG) commonly shows superconductivity, yet a TBG sample
    where one of the graphene layers was rotationally aligned to a hexagonal Boron
    Nitride (hBN) cladding layer instead provided the first experimental observation
    of orbital ferromagnetism. To create samples with aligned graphene/hBN, researchers
    often align edges of exfoliated flakes that appear straight in optical micrographs.
    However, graphene or hBN can cleave along either zig-zag or armchair lattice directions,
    introducing a 30◦ ambiguity in the relative orientation of two flakes. By characterizing
    the crystal lattice orientation of exfoliated flakes prior to stacking using Raman
    and second-harmonic generation for graphene and hBN, respectively, we can now
    unambiguously align monolayer graphene to hBN at a near-0◦, not 30◦, relative
    twist angle. We confirm this alignment by torsional force microscopy (TFM) of
    the graphene/hBN moiré on an open-face stack, and then by cryogenic transport
    measurements, after full encapsulation with a second, non-aligned hBN layer. This
    work demonstrates a key step toward systematically exploring the effects of the
    relative twist angle between dissimilar materials within moiré heterostructures.\r\n"
  description_type: abstract
  lang: und

## Creator

- name: Rupini V. Kamat
  role: author
  orcid: https://orcid.org/0009-0006-5580-1958
- name: Aaron L. Sharpe
  role: author
- name: Mihir Pendharkar
  role: author
  orcid: https://orcid.org/0000-0003-1857-6131
- name: Jenny Hu
  role: author
- name: Steven J. Tran
  role: author
- name: Gregory Zaborski
  role: author
- name: Marisa Hocking
  role: author
- name: Joe Finney
  role: author
  orcid: https://orcid.org/0000-0001-7166-9754
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: Marc A. Kastner
  role: author
  orcid: https://orcid.org/0000-0001-7641-5438
- name: Andrew J. Mannix
  role: author
- name: Tony Heinz
  role: author
  orcid: https://orcid.org/0000-0003-1365-9464
- name: David Goldhaber-Gordon
  role: author

## Contact agent



## Publisher

organization: Proceedings of the National Academy of Sciences

## Managing organization



## Keyword

- subject: Moiré heterostructures
  schema: not_defined
- subject: graphene
  schema: not_defined
- subject: hBN cladding
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Proceedings of the National Academy of Sciences
  issn: '00278424'
  volume: '121'
  issue: '40'

## Conference



## Related item



## Funding

- identifier: GBMF9460
  funder_name: Gordon and Betty Moore Foundation
- identifier: 21H05233
  funder_name: JSPS KAKENHI
- identifier: 23H02052
  funder_name: JSPS KAKENHI
- identifier: DE-AC02-76SF00515
  funder_name: DOE | Office of Science
- identifier: DE-AC02-76SF00515
  funder_name: DOE | Office of Science
- identifier: ECCS-2026822
  funder_name: National Science Foundation

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



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## Computational method



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## Fileset

- id: bfe4c106-a3da-489f-979a-59cec9e55c1b
  filename: kamat-et-al-2024-deterministic-fabrication-of-graphene-hexagonal-boron-nitride-moiré-superlattices.pdf
  content_type: application/pdf
  size: 20852015
  md5: a6c740d4ede063f997d2931adbef4928

## Thumbnail

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filename: kamat-et-al-2024-deterministic-fabrication-of-graphene-hexagonal-boron-nitride-moiré-superlattices.pdf