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Tunable and low-loss correlated plasmons in Mott-like insulating oxides

Author

Listed:
  • Teguh Citra Asmara

    (NUSNNI-NanoCore, National University of Singapore
    Singapore Synchrotron Light Source, National University of Singapore)

  • Dongyang Wan

    (NUSNNI-NanoCore, National University of Singapore
    National University of Singapore)

  • Yongliang Zhao

    (NUSNNI-NanoCore, National University of Singapore)

  • Muhammad Aziz Majidi

    (Singapore Synchrotron Light Source, National University of Singapore
    National University of Singapore)

  • Christopher T. Nelson

    (University of California
    National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Mary C. Scott

    (University of California
    National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Yao Cai

    (University of California)

  • Bixing Yan

    (NUSNNI-NanoCore, National University of Singapore
    National University of Singapore)

  • Daniel Schmidt

    (Singapore Synchrotron Light Source, National University of Singapore)

  • Ming Yang

    (Singapore Synchrotron Light Source, National University of Singapore
    National University of Singapore)

  • Tao Zhu

    (Singapore Synchrotron Light Source, National University of Singapore
    National University of Singapore)

  • Paolo E. Trevisanutto

    (Singapore Synchrotron Light Source, National University of Singapore
    National University of Singapore
    Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore)

  • Mallikarjuna R. Motapothula

    (NUSNNI-NanoCore, National University of Singapore
    National University of Singapore)

  • Yuan Ping Feng

    (National University of Singapore
    Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore)

  • Mark B. H. Breese

    (NUSNNI-NanoCore, National University of Singapore
    Singapore Synchrotron Light Source, National University of Singapore
    National University of Singapore)

  • Matthew Sherburne

    (University of California)

  • Mark Asta

    (University of California)

  • Andrew Minor

    (University of California
    National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory)

  • T. Venkatesan

    (NUSNNI-NanoCore, National University of Singapore
    National University of Singapore
    NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore
    National University of Singapore)

  • Andrivo Rusydi

    (NUSNNI-NanoCore, National University of Singapore
    Singapore Synchrotron Light Source, National University of Singapore
    National University of Singapore
    NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore)

Abstract

Plasmonics has attracted tremendous interests for its ability to confine light into subwavelength dimensions, creating novel devices with unprecedented functionalities. New plasmonic materials are actively being searched, especially those with tunable plasmons and low loss in the visible–ultraviolet range. Such plasmons commonly occur in metals, but many metals have high plasmonic loss in the optical range, a main issue in current plasmonic research. Here, we discover an anomalous form of tunable correlated plasmons in a Mott-like insulating oxide from the Sr1−xNb1−yO3+δ family. These correlated plasmons have multiple plasmon frequencies and low loss in the visible–ultraviolet range. Supported by theoretical calculations, these plasmons arise from the nanometre-spaced confinement of extra oxygen planes that enhances the unscreened Coulomb interactions among charges. The correlated plasmons are tunable: they diminish as extra oxygen plane density or film thickness decreases. Our results open a path for plasmonics research in previously untapped insulating and strongly-correlated materials.

Suggested Citation

  • Teguh Citra Asmara & Dongyang Wan & Yongliang Zhao & Muhammad Aziz Majidi & Christopher T. Nelson & Mary C. Scott & Yao Cai & Bixing Yan & Daniel Schmidt & Ming Yang & Tao Zhu & Paolo E. Trevisanutto , 2017. "Tunable and low-loss correlated plasmons in Mott-like insulating oxides," Nature Communications, Nature, vol. 8(1), pages 1-11, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15271
    DOI: 10.1038/ncomms15271
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    Cited by:

    1. T. J. Whitcher & Angga Dito Fauzi & D. Caozheng & X. Chi & A. Syahroni & T. C. Asmara & M. B. H. Breese & A. H. Castro Neto & A. T. S. Wee & M. Aziz Majidi & A. Rusydi, 2021. "Unravelling strong electronic interlayer and intralayer correlations in a transition metal dichalcogenide," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    2. Han Gao & Chao Ding & Jaeseok Son & Yangyu Zhu & Mingzheng Wang & Zhi Gen Yu & Jianing Chen & Le Wang & Scott A. Chambers & Tae Won Noh & Mingwen Zhao & Yangyang Li, 2022. "Ultra-flat and long-lived plasmons in a strongly correlated oxide," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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