---
_id: '4165'
abstract:
- lang: eng
  text: Metal nanoparticles host localized plasmon excitations that allow the manipulation
    of optical fields at the nanoscale. Despite the availability of several techniques
    for imaging plasmons, direct access into the symmetries of these excitations remains
    elusive, thus hindering progress in the development of applications. Here, we
    present a combination of angle-, polarization-, and space-resolved cathodoluminescence
    spectroscopy methods to selectively access the symmetry and degeneracy of plasmonic
    states in lithographically fabricated gold nanoprisms. We experimentally reveal
    and spatially map degenerate states of multipole plasmon modes with nanometer
    spatial resolution and further provide recipes for resolving optically dark and
    out-of-plane modes. Full-wave simulations in conjunction with a simple tight-binding
    model explain the complex plasmon structure in these particles and reveal intriguing
    mode-symmetry phenomena. Our approach introduces systematics for a comprehensive
    symmetry characterization of plasmonic states in high-symmetry nanostructures.
article_type: original
author:
- first_name: Viktor
  full_name: Myroshnychenko, Viktor
  id: '46371'
  last_name: Myroshnychenko
- first_name: Natsuki
  full_name: Nishio, Natsuki
  last_name: Nishio
- first_name: F. Javier
  full_name: García de Abajo, F. Javier
  last_name: García de Abajo
- first_name: Jens
  full_name: Förstner, Jens
  id: '158'
  last_name: Förstner
  orcid: 0000-0001-7059-9862
- first_name: Naoki
  full_name: Yamamoto, Naoki
  last_name: Yamamoto
citation:
  ama: Myroshnychenko V, Nishio N, García de Abajo FJ, Förstner J, Yamamoto N. Unveiling
    and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution.
    <i>ACS Nano</i>. 2018;12(8):8436-8446. doi:<a href="https://doi.org/10.1021/acsnano.8b03926">10.1021/acsnano.8b03926</a>
  apa: Myroshnychenko, V., Nishio, N., García de Abajo, F. J., Förstner, J., &#38;
    Yamamoto, N. (2018). Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles
    with Nanometer Resolution. <i>ACS Nano</i>, <i>12</i>(8), 8436–8446. <a href="https://doi.org/10.1021/acsnano.8b03926">https://doi.org/10.1021/acsnano.8b03926</a>
  bibtex: '@article{Myroshnychenko_Nishio_García de Abajo_Förstner_Yamamoto_2018,
    title={Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with
    Nanometer Resolution}, volume={12}, DOI={<a href="https://doi.org/10.1021/acsnano.8b03926">10.1021/acsnano.8b03926</a>},
    number={8}, journal={ACS Nano}, publisher={American Chemical Society (ACS)}, author={Myroshnychenko,
    Viktor and Nishio, Natsuki and García de Abajo, F. Javier and Förstner, Jens and
    Yamamoto, Naoki}, year={2018}, pages={8436–8446} }'
  chicago: 'Myroshnychenko, Viktor, Natsuki Nishio, F. Javier García de Abajo, Jens
    Förstner, and Naoki Yamamoto. “Unveiling and Imaging Degenerate States in Plasmonic
    Nanoparticles with Nanometer Resolution.” <i>ACS Nano</i> 12, no. 8 (2018): 8436–46.
    <a href="https://doi.org/10.1021/acsnano.8b03926">https://doi.org/10.1021/acsnano.8b03926</a>.'
  ieee: V. Myroshnychenko, N. Nishio, F. J. García de Abajo, J. Förstner, and N. Yamamoto,
    “Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer
    Resolution,” <i>ACS Nano</i>, vol. 12, no. 8, pp. 8436–8446, 2018.
  mla: Myroshnychenko, Viktor, et al. “Unveiling and Imaging Degenerate States in
    Plasmonic Nanoparticles with Nanometer Resolution.” <i>ACS Nano</i>, vol. 12,
    no. 8, American Chemical Society (ACS), 2018, pp. 8436–46, doi:<a href="https://doi.org/10.1021/acsnano.8b03926">10.1021/acsnano.8b03926</a>.
  short: V. Myroshnychenko, N. Nishio, F.J. García de Abajo, J. Förstner, N. Yamamoto,
    ACS Nano 12 (2018) 8436–8446.
date_created: 2018-08-28T07:44:24Z
date_updated: 2022-01-06T07:00:27Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1021/acsnano.8b03926
file:
- access_level: open_access
  content_type: application/pdf
  creator: hclaudia
  date_created: 2018-08-28T07:45:47Z
  date_updated: 2018-09-03T13:54:21Z
  file_id: '4166'
  file_name: 2018 Myroshnychenko,Nishio,Garcia de Abajo,Förstner,Yamamoto_Unveiling
    and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution.pdf
  file_size: 4463352
  relation: main_file
file_date_updated: 2018-09-03T13:54:21Z
has_accepted_license: '1'
intvolume: '        12'
issue: '8'
keyword:
- tet_topic_plasmonics
language:
- iso: eng
oa: '1'
page: 8436-8446
project:
- _id: '53'
  name: TRR 142
- _id: '56'
  name: TRR 142 - Project Area C
- _id: '75'
  name: TRR 142 - Subproject C5
publication: ACS Nano
publication_identifier:
  issn:
  - 1936-0851
  - 1936-086X
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer
  Resolution
type: journal_article
urn: '41659'
user_id: '158'
volume: 12
year: '2018'
...