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  Near-Field Manipulation in a Scanning Tunneling Microscope Junction with Plasmonic Fabry-Pérot Tips

Böckmann, H., Liu, S., Müller, M., Hammud, A., Wolf, M., & Kumagai, T. (2019). Near-Field Manipulation in a Scanning Tunneling Microscope Junction with Plasmonic Fabry-Pérot Tips. Nano Letters, 19(6), 3597-3602. doi:10.1021/acs.nanolett.9b00558.

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 Creators:
Böckmann, Hannes1, Author           
Liu, Shuyi1, Author           
Müller, Melanie1, Author           
Hammud, Adnan2, Author           
Wolf, Martin1, Author           
Kumagai, Takashi1, 3, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
3JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan, ou_persistent22              

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 Abstract: Near-field manipulation in plasmonic nanocavities can provide various applications in nanoscale science and technology. In particular, a gap plasmon in a scanning tunneling microscope (STM) junction is of key interest to nanoscale imaging and spectroscopy. Here we show that spectral features of a plasmonic STM junction can be manipulated by nanofabrication of Au tips using focused ion beam. An exemplary Fabry–Pérot type resonator of surface plasmons is demonstrated by producing the tip with a single groove on its shaft. Scanning tunneling luminescence spectra of the Fabry–Pérot tips exhibit spectral modulation resulting from interference between localized and propagating surface plasmon modes. In addition, the quality factor of the plasmonic Fabry–Pérot interference can be improved by optimizing the overall tip shape. Our approach paves the way for near-field imaging and spectroscopy with a high degree of accuracy.

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Language(s): eng - English
 Dates: 2019-04-262019-02-072019-05-072019-06-12
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.nanolett.9b00558
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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: 6 Volume / Issue: 19 (6) Sequence Number: - Start / End Page: 3597 - 3602 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403