@Article{Semenov_etal1997,
author="Semenov, A. D.
and Heusinger, M. A.
and Renk, K. F.
and Menschikov, E.
and Sergeev, A. V.
and Elant{\textquoteright}ev, A. I.
and Goghidze, I. G.
and Gol{\textquoteright}tsman, G. N.",
title="Influence of phonon trapping on the performance of NbN kinetic inductance detectors",
journal="IEEE Trans. Appl. Supercond.",
year="1997",
volume="7",
number="2",
pages="3083--3086",
optkeywords="NbN KID",
abstract="Voltage and microwave photoresponse of NbN thin films to modulated and pulsed optical radiation reveals, far below the superconducting transition, a response time consistent with the lifetime of nonequilibrium quasiparticles. We show that even in 5 nm thick films at 4.2 K the phonon trapping is significant resulting in a quasiparticle lifetime of a few nanoseconds that is an order of magnitude larger than the recombination time. Values and temperature dependence of the quasiparticle lifetime obey the Bardeen-Cooper-Schrieffer theory and are in quantitative agreement with the electron-phonon relaxation rate determined from the resistive response near the superconducting transition. We discuss a positive effect of the phonon trapping on the performance of kinetic inductance detectors.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1598), last updated on Tue, 25 May 2021 21:50:29 -0500",
issn="1051-8223",
doi="10.1109/77.621984",
opturl="http://ieeexplore.ieee.org/document/621984/",
opturl="https://doi.org/10.1109/77.621984"
}