Niobium diselenide superconducting photodetectors

G. J. Orchin, D. De Fazio, A. Di Bernardo, M. Hamer, D. Yoon, A. R. Cadore, I. Goykhman, K. Watanabe, T. Taniguchi, J. W.A. Robinson, R. V. Gorbachev, A. C. Ferrari, R. H. Hadfield

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We report the photoresponse of niobium diselenide (NbSe2), a transition metal dichalcogenide which exhibits superconducting properties down to a single layer. Devices are built by using micromechanically cleaved 2-10 layers and tested under current bias using nano-optical mapping in the 350 mK-5 K range, where they are found to be superconducting. The superconducting state can be perturbed by absorption of light, resulting in a voltage signal when the devices are current biased. The response is found to be energy dependent, making the devices useful for applications requiring energy resolution, such as bolometry, spectroscopy, and infrared imaging.

    Original languageEnglish
    Article number251103
    JournalApplied Physics Letters
    Volume114
    Issue number25
    Early online date27 Jun 2019
    DOIs
    Publication statusPublished - 2019

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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