Electron heating by photon-assisted tunneling in niobium terahertz mixers with integrated niobium titanium nitride striplines

B. Leone, J. R. Gao, T. M. Klapwijk, B. D. Jackson, W. M. Laauwen, G. de Lange

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    Abstract

    We describe the gap voltage depression and current-voltage (I-V) characteristics in pumped niobium superconductor-insulator-superconductor junction with niobium titanium nitride tuning stripline by introducing an electron heating power contribution resulting from the photon-assisted tunneling process. Theoretical fits using the extended Tien-Gordon theory are obtained that reproduce the most salient features of the pumped I-V characteristics. (C) 2001 American Institute of Physics.
    Original languageEnglish
    Pages (from-to)1616-1618
    Number of pages3
    JournalApplied Physics Letters
    Volume78
    Issue number11
    DOIs
    Publication statusPublished - 12-Mar-2001

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