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@ARTICLE{Petrychuk:912248,
author = {Petrychuk, Mykhailo and Vitusevich, Svetlana},
title = {{T}ransformation in low‐frequency noise spectra in
{G}a{N} {HEMT} in non‐equilibrium conditions},
journal = {Physica status solidi / A},
volume = {220},
number = {2},
issn = {0031-8965},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2022-05445},
pages = {.202200619},
year = {2023},
abstract = {It is known that flicker noise is the most intriguing noise
component because it can be found in any type of material,
object, device, or system. Despite the struggle of
scientists to find a mutual model for the 1/f flicker noise
law, there is still a challenge to describe the law in many
cases. Herein, the studies of two-level random telegraph
signal (RTS) fluctuations analyzed for the state-of-the-art
high-electron-mobility transistors (HEMTs), fabricated based
on AlGaN/GaN heterostructures, are presented. It is revealed
that the shape of the fluctuations can be used to describe
the formation of a spectrum with γ = 1, 2, 3. The data
demonstrate that the 1/f spectrum can be obtained as a
result of the interactions of the carriers in parallel
channels along the length of a system. Experimentally
registered RTS fluctuations have a spectrum described by
behavior. The data are in good agreement with the
theoretically predicted pulsed shape, allowing the
generation of a 1/f spectrum. Based on the data analysis and
the theoretical description of the fluctuations, the origin
of 1/f fluctuations in nonequilibrium conditions is
explained by interactions resulting in correlations of
carriers in two parallel channels as the common feature in
the HEMT devices.},
cin = {IBI-3},
ddc = {530},
cid = {I:(DE-Juel1)IBI-3-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000900664100001},
doi = {10.1002/pssa.202200619},
url = {https://juser.fz-juelich.de/record/912248},
}