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@ARTICLE{Pavlovskiy:874364,
author = {Pavlovskiy, V. V. and Gundareva, I. I. and Volkov, O. Y.
and Divin, Y. Y.},
title = {{W}ideband detection of electromagnetic signals by high-
{T} c {J}osephson junctions with comparable {J}osephson and
thermal energies},
journal = {Applied physics letters},
volume = {116},
number = {8},
issn = {1077-3118},
address = {Melville, NY},
publisher = {American Inst. of Physics},
reportid = {FZJ-2020-01387},
pages = {082601 -},
year = {2020},
abstract = {Detection mechanisms in Josephson junctions with energies
Ej comparable to thermal energies kT have been studied. The
responses ΔV of YBa2Cu3O7−x bicrystal junctions to
monochromatic radiation with frequencies f ranging from
94 GHz to 3.1 THz can be described in terms of classical
rectification on a static nonlinear V–I curve at low
frequencies and frequency modulation of the ac Josephson
current at high frequencies, with an interplay between these
mechanisms at intermediate frequencies. An electrical
noise-equivalent power of (9 ± 3)
× 10−15 W/Hz1/2, a responsivity of (3.4 ± 0.5)
× 105 V/W, and a dynamic power range of 5 × 104 have
been demonstrated for the square-law classical detection of
94 GHz radiation with the junctions at 50 K. The effect
of background radiation on the V–I curves of YBa2Cu3O7−x
bicrystal junctions was found to have an optical
noise-equivalent temperature of ≤30 mK/Hz1/2. The main
contribution to the effect comes from the interplay between
the classical and Josephson detection mechanisms. The
spectral and power dependencies of the responses ΔV of
Josephson junctions have been numerically simulated within
the resistively shunted junction model at various values of
kT/Ej, and the results are in acceptable agreement with the
experimental data.},
cin = {PGI-5},
ddc = {530},
cid = {I:(DE-Juel1)PGI-5-20110106},
pnm = {144 - Controlling Collective States (POF3-144)},
pid = {G:(DE-HGF)POF3-144},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000519609100001},
doi = {10.1063/1.5142400},
url = {https://juser.fz-juelich.de/record/874364},
}