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

doi:10.1063/1.5097389

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

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 language	English
Article number	251103
Journal	Applied Physics Letters
Volume	114
Issue number	25
DOIs	https://doi.org/10.1063/1.5097389
State	Published - 24 Jun 2019
Externally published	Yes

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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.",

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AU - Orchin, G. J.

AU - De Fazio, D.

AU - Di Bernardo, A.

AU - Hamer, M.

AU - Yoon, D.

AU - Cadore, A. R.

AU - Goykhman, I.

AU - Watanabe, K.

AU - Taniguchi, T.

AU - Robinson, J. W.A.

AU - Gorbachev, R. V.

AU - Ferrari, A. C.

AU - Hadfield, R. H.

PY - 2019/6/24

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Niobium diselenide superconducting photodetectors

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