Niobium diselenide superconducting photodetectors

Orchin, G.J. et al. (2019) Niobium diselenide superconducting photodetectors. Applied Physics Letters, 114(25), 251103. (doi: 10.1063/1.5097389)

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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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Orchin, Dr Gavin and Hadfield, Professor Robert
Authors: Orchin, G.J., De Fazio, D., Di Bernardo, A., Hamer, M., Yoon, D., Cadore, A.R., Goykhman, I., Watanabe, K., Taniguchi, T., Robinson, J.W.A., Gorbachev, R.V., Ferrari, A.C., and Hadfield, R.H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN (Online):1077-3118
Published Online:27 June 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Applied Physics Letters 114(25):251103
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
673311IRIS - Infrared imaging and sensing: the single photonRobert HadfieldEuropean Research Council (ERC)648604ENG - ENGINEERING ELECTRONICS & NANO ENG