Nonequilibrium interpretation of DC properties of NbN superconducting hot electron bolometers

Nonequilibrium interpretation of DC properties of NbN superconducting hot electron bolometers

Shcherbatenko, M. (Moscow State University; Moscow State Pedagogical University)
Tretyakov, I. (Russian Academy of Sciences; Moscow State Pedagogical University; Moscow State University)
Lobanov, Yu (Moscow State Pedagogical University; Moscow State University)
Maslennikov, S. N. (Moscow State Pedagogical University)
Kaurova, N. (Moscow State Pedagogical University)
Finkel, M. (TU Delft QN/Klapwijk Lab)
Voronov, B. (Moscow State Pedagogical University)
Goltsman, G. (National Research University Higher School of Economics; Moscow State Pedagogical University)
Klapwijk, T.M. (TU Delft QN/Klapwijk Lab; Moscow State Pedagogical University)

2016-09-26

We present a physically consistent interpretation of the dc electrical properties of niobiumnitride (NbN)-based superconducting hot-electron bolometer mixers, using concepts of nonequilibrium superconductivity. Through this, we clarify what physical information can be extracted from the resistive transition and the dc current-voltage characteristics, measured at suitably chosen temperatures, and relevant for device characterization and optimization. We point out that the intrinsic spatial variation of the electronic properties of disordered superconductors, such as NbN, leads to a variation from device to device.

Superconductors
Gold
Electrical resistivity
Coherence
Bolometers

http://resolver.tudelft.nl/uuid:d20231cb-056c-457d-8cdf-519e5adb0e10

https://doi.org/10.1063/1.4963691

2017-09-30

0003-6951

Applied Physics Letters, 109 (13), 1-5

Institutional Repository

journal article

© 2016 M. Shcherbatenko, I. Tretyakov, Yu Lobanov, S. N. Maslennikov, N. Kaurova, M. Finkel, B. Voronov, G. Goltsman, T.M. Klapwijk