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M. Yu Mikhailov

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Journal article (2025) - F. Avitabile, F. Colangelo, M. Yu Mikhailov, Z. Makhdoumi Kakhaki, A. Kumar, I. Esmaeil Zadeh, C. Attanasio, C. Cirillo
The influence of the reactive DC sputtering parameters on the superconducting properties of NbReN ultrathin films was investigated. A detailed study of the current-voltage characteristics of the plasma was performed to optimize the superconducting critical temperature, Tc. The thickness dependence of T c for the films deposited under different conditions was analyzed down to the ultrathin limit. Optimized films were used to fabricate superconducting nanowire single photon detectors which, at T = 3.5 K, show saturated internal detection efficiency (IDE) up to a wavelength of 1301 nm and 95% IDE at 1548 nm with recovery times and timing jitter of about 8 ns and 28 ps, respectively. ...