Article Room-Temperature Plasmon-Assisted Resonant THz Detection in Single-Layer Graphene Transistors

José M. Caridad ; Óscar Castelló ; Sofía M. López Baptista ; Takashi Taniguchi SAMURAI ORCID (National Institute for Materials Science) ; Kenji Watanabe SAMURAI ORCID (National Institute for Materials Science) ; Hartmut G. Roskos ; Juan A. Delgado-Notario

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José M. Caridad, Óscar Castelló, Sofía M. López Baptista, Takashi Taniguchi, Kenji Watanabe, Hartmut G. Roskos, Juan A. Delgado-Notario. Room-Temperature Plasmon-Assisted Resonant THz Detection in Single-Layer Graphene Transistors. Nano Letters. 2024, 24 (3), 935-942. https://doi.org/10.1021/acs.nanolett.3c04300
SAMURAI

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(abstract)

Plasmonic resonant detection of Terahertz (THz) radiations in field effect transistor (FET) devices has become a vibrant field of investigation over the past two decades. Such systems enable the selective detection of THz fields and are promising for a wide range of applications. However, clear signatures of plasmon-assisted resonances in THz FETs have only been measured at cryogenic temperatures so far and are absent at application-relevant room-temperature conditions. In this work, we observe the sought-after room-temperature resonant detection of THz radiation in short-channel FETs made from high-quality single-layer graphene. The survival of this resonant regime at high temperatures in unbiased devices ultimately relies on the weak intrinsic electron scattering offered by this material, which avoids the huge damping of the plasma oscillations in the two-dimensional electron fluid.

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Keyword: Terahertz photodevices, plasmonic resonances, graphene

Date published: 2024-01-24

Publisher: American Chemical Society (ACS)

Journal:

  • Nano Letters (ISSN: 15306984) vol. 24 issue. 3 p. 935-942

Funding:

  • European Research Council 101039754
  • Agencia Estatal de Investigaci?n
  • Ministry of Education, Culture, Sports, Science and Technology
  • Ministerio de Ciencia e Innovaci?n PID2021-126483OB-I00
  • Ministerio de Ciencia e Innovaci?n PID2021-128154NA-I00
  • Ministerio de Ciencia e Innovaci?n RYC2019-028443-I
  • European Regional Development Fund
  • Deutsche Forschungsgemeinschaft RO 770/40-2
  • Deutsche Forschungsgemeinschaft RO 770/53-1
  • Universidad de Salamanca
  • Japan Society for the Promotion of Science 21H05233
  • Japan Society for the Promotion of Science 23H02052
  • Junta de Castilla y Le?n SA103P23
  • European Social Fund Plus

Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1021/acs.nanolett.3c04300

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Updated at: 2025-02-14 16:30:45 +0900

Published on MDR: 2025-02-14 16:30:45 +0900

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