@Misc{Kitaygorsky_etal2007,
author="Kitaygorsky, Jennifer
and Komissarov, I.
and Jukna, A.
and Minaeva, O.
and Kaurova, N.
and Divochiy, A.
and Korneev, A.
and Tarkhov, M.
and Voronov, B.
and Milostnaya, I.
and Gol{\textquoteright}tsman, G.
and Sobolewski, R.",
title="Fluctuations in two-dimensional superconducting NbN nanobridges and nanostructures meanders",
year="2007",
volume="52",
number="1",
pages="L9.00013",
abstract="We have observed fluctuations, manifested as sub-nanosecond to nanosecond transient, millivolt-amplitude voltage pulses, generated in two-dimensional NbN nanobridges, as well as in extended superconducting meander nanostructures, designed for single photon counting. Both nanobridges and nano-stripe meanders were biased at currents close to the critical current and measured in a range of temperatures from 1.5 to 8 K. During the tests, the devices were blocked from all incoming radiation by a metallic enclosure and shielded from any external magnetic fields. We attribute the observed spontaneous voltage pulses to the Kosterlitz-Thouless-type fluctuations, where the high enough applied bias current reduces the binding energy of vortex-antivortex pairs and, subsequently, thermal fluctuations break them apart causing the order parameter to momentarily reduce to zero, which in turn causes a transient voltage pulse. The duration of the voltage pulses depended on the device geometry (with the high-kinetic inductance meander structures having longer, nanosecond, pulses) while their rate was directly related to the biasing current as well as temperature.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1027), last updated on Sun, 16 May 2021 16:40:15 -0500",
opturl="https://meetings.aps.org/Meeting/MAR07/Event/59422"
}