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@ARTICLE{Sydoruk:829119,
author = {Sydoruk, Viktor and Zadorozhnyi, Ihor and Hardtdegen, Hilde
and Lüth, Hans and Petrychuk, Michael and Naumov, A. V. and
Korotyeyev, V. V. and Kochelap, V. A. and Belyaev, A. E. and
Vitusevich, Svetlana},
title = {{E}lectronic edge-state and space-charge phenomena in long
{G}a{N} nanowires and nanoribbons{PGI}},
journal = {Nanotechnology},
volume = {28},
number = {13},
issn = {1361-6528},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2017-02929},
pages = {135204 (11pp)},
year = {2017},
abstract = {We studied space-charge-distribution phenomena in planar
GaN nanowires and nanoribbons (NRs). The results obtained at
low voltages demonstrate that the electron concentration
changes not only at the edges of the NR, but also in the
middle part of the NR. The effect is stronger with
decreasing NR width. Moreover, the spatial separation of the
positive and negative charges results in electric-field
patterns outside the NR. This remarkable feature of
electrostatic fields outside the NR may be even stronger in
2D material structures. For larger voltages the
space-charge-limited current (SCLC) effect determines the
main mechanism of transport in the NR samples. The onset of
the SCLC effect clearly correlates with the NR width. The
results are confirmed by noise spectroscopy studies of the
NR transport. We found that the noise increases with
decreasing NR width and the shape of the spectra changes
with voltage increase with a tendency toward slope (3/2),
reflecting diffusion processes due to the SCLC effect. At
higher voltages noise decreases as a result of changes in
the scattering mechanisms. We suggest that the features of
the electric current and noise found in the NRs are of
general character and will have an impact on the development
of NR-based devices.},
cin = {PGI-8 / ICS-8 / JARA-FIT / PGI-9},
ddc = {530},
cid = {I:(DE-Juel1)PGI-8-20110106 / I:(DE-Juel1)ICS-8-20110106 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)PGI-9-20110106},
pnm = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
pid = {G:(DE-HGF)POF3-523},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000395938500004},
doi = {10.1088/1361-6528/aa5de3},
url = {https://juser.fz-juelich.de/record/829119},
}