# Landau-phonon polaritons in Dirac heterostructures

https://mdr.nims.go.jp/datasets/358f8bd7-f9bb-43de-aa4b-043de581b14e

## File

- [sciadv.adp3487.pdf](https://mdr.nims.go.jp/filesets/881508e3-009a-4694-8318-627de5032e7c/download) ([Detail](https://mdr.nims.go.jp/filesets/881508e3-009a-4694-8318-627de5032e7c.md))

## Id

358f8bd7-f9bb-43de-aa4b-043de581b14e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T01:22:50.748972Z

## Updated at

2025-02-23T13:46:31.731856Z

## Published at

2025-02-23T13:46:31.812908Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.adp3487

## Date published

2024-09-13

## Recorded date published

2024-9-13

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Landau-phonon polaritons in Dirac heterostructures
  title_type: original
  lang: en

## Description

- description: 'Polaritons are light-matter quasiparticles that govern the optical
    response of quantum materials and enable their nanophotonic applications1–4. We
    have studied a new type of polaritons arising in magnetized graphene5–7 encapsulated
    in hexagonal boron nitride (hBN)8–10. These polaritons arise from hybridization
    of Dirac magnetoexciton modes of graphene with waveguide phonon modes of hBN crystals.
    We refer to these quasiparticles as the Landau-phonon polaritons (LPPs). Using
    infrared magneto nanoscopy, we imaged LPPs and controlled their real-space propagation
    by varying the magnetic field. These LLPs have large in-plane momenta and are
    not bound by the conventional optical selection rules, granting us access to the
    “forbidden” inter-Landau level transitions (ILTs). We observed avoided crossings
    in the LPP dispersion – a hallmark of the strong coupling regime – occurring when
    the magnetoexciton and hBN phonon frequencies matched. Our LPP-based nanoscopy
    also enabled us to resolve two fundamental many-body effects: the graphene Fermi
    velocity renormalization11–16 and ILT-dependent magnetoexciton binding energies.
    These results indicate that magnetic-field-tuned Dirac materials, such as charge-neutral
    graphene, are promising platforms for precise nanoscale control of light-matter
    interaction.'
  description_type: abstract
  lang: und

## Creator

- name: Lukas Wehmeier
  role: author
- name: Suheng Xu
  role: author
- name: Rafael A. Mayer
  role: author
- name: Brian Vermilyea
  role: author
- name: Makoto Tsuneto
  role: author
- name: Michael Dapolito
  role: author
- name: Rui Pu
  role: author
- name: Zengyi Du
  role: author
- name: Xinzhong Chen
  role: author
- name: Wenjun Zheng
  role: author
- name: Ran Jing
  role: author
- name: Zijian Zhou
  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: Adrian Gozar
  role: author
- name: Qiang Li
  role: author
- name: Alexey B. Kuzmenko
  role: author
- name: G. Lawrence Carr
  role: author
- name: Xu Du
  role: author
- name: Michael M. Fogler
  role: author
- name: D. N. Basov
  role: author
- name: Mengkun Liu
  role: author

## Contact agent



## Publisher

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

## Managing organization



## Keyword

- subject: Polaritons
  schema: not_defined
- subject: Dirac magnetoexciton
  schema: not_defined
- subject: hBN
  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: '10'
  issue: '37'
  article_number: eadp3487

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## Fileset

- id: 881508e3-009a-4694-8318-627de5032e7c
  filename: sciadv.adp3487.pdf
  content_type: application/pdf
  size: 4842624
  md5: a30d788b3b05a3fe2e60bc672389526c

## Thumbnail

fileset_id: 881508e3-009a-4694-8318-627de5032e7c
filename: sciadv.adp3487.pdf