2019/03/06 by Gavin J. Orchin, Gavin Orchin, Domenico De Fazio +13
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Advanced Semiconductor Detectors and Materials #Condensed matter physics #Diselenide #Materials science #Metallurgy #Niobium #Optoelectronics #Photodetector #Physics #Selenium #Semiconductor Quantum Structures and Devices #Superconductivity #cond-mat.supr-con #physics.app-ph
paper · pdf · doi:10.1063/1.5097389
6 pages, 6 figures
arxiv created 2019/03/06 · openalex publication_date 2019/06/24 · arxiv updated 2019/07/24 · openalex created_date 2019/08/13 · openalex updated_date 2026/08/05
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.