# Near-field probing of image phonon-polaritons in hexagonal boron nitride on gold crystals

https://mdr.nims.go.jp/datasets/592b64a3-527c-4368-8473-702747beb41a

## File

- [sciadv.abn0627.pdf](https://mdr.nims.go.jp/filesets/8e6428e1-8e58-451e-9bea-e513ccaee283/download) ([Detail](https://mdr.nims.go.jp/filesets/8e6428e1-8e58-451e-9bea-e513ccaee283.md))

## Id

592b64a3-527c-4368-8473-702747beb41a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-28T00:42:49.302890Z

## Updated at

2025-03-03T07:30:36.871624Z

## Published at

2025-03-03T07:30:36.936518Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.abn0627

## Date published

2022-07-15

## Recorded date published

2022-7-15

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Near-field probing of image phonon-polaritons in hexagonal boron nitride
    on gold crystals
  title_type: original
  lang: en

## Description

- description: When a low-dimensional polaritonic material is placed in proximity
    to a highly conductive metal, polariton modes couple to their images in the metal,
    forming highly compressed image polaritons. So far, near-field mapping has been
    used to observe such modes in graphene and hexagonal boron nitride (hBN). However,
    an accurate measurement of their intrinsic loss remains challenging because of
    the inherent complexity of the near-field signal, particularly for the hyperbolic
    phonon-polaritons. Here we demonstrate that monocrystalline gold flakes, an atomically-flat
    low-loss substrate for image modes, provide a platform for precise near-field
    measurement of the complex propagation constant of image polaritons. As a topical
    example, we measure dispersion of the hyperbolic image phonon-polaritons (HIP)
    in hBN, revealing that their normalized propagation length exhibits a parabolic
    spectral dependency. At the frequency of the maximal propagation, image modes
    exhibit nearly two times lower normalized loss, while being 2.4 times more compressed
    compared to the phonon-polaritons in hBN on a dielectric substrate. We conclude
    that the image phonon-polaritons in van der Waals crystals provide a unique nanophotonic
    platform where strong light-matter interaction and wave phenomena can be harnessed
    at the same time.
  description_type: abstract
  lang: und

## Creator

- name: Sergey G. Menabde
  role: author
- name: Sergejs Boroviks
  role: author
- name: Jongtae Ahn
  role: author
- name: Jacob T. Heiden
  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: Tony Low
  role: author
- name: Do Kyung Hwang
  role: author
- name: N. Asger Mortensen
  role: author
- name: Min Seok Jang
  role: author

## Contact agent



## Publisher

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

## Managing organization



## Keyword

- subject: Near-field mapping
  schema: not_defined
- subject: " phonon-polaritons"
  schema: not_defined
- subject: van der Waals crystals
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '8'
  issue: '28'

## Conference



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## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Fileset

- id: 8e6428e1-8e58-451e-9bea-e513ccaee283
  filename: sciadv.abn0627.pdf
  content_type: application/pdf
  size: 558841
  md5: ba5da2c67ad11b2c95e511d433650bb6

## Thumbnail

fileset_id: 8e6428e1-8e58-451e-9bea-e513ccaee283
filename: sciadv.abn0627.pdf