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@ARTICLE{Handziuk:850676,
author = {Handziuk, Volodymyr and Gasparyan, Ferdinand and Vandamme,
Lode K J and Coppola, Maristella and Sydoruk, Viktor and
Petrychuk, Mykhailo and Mayer, Dirk and Vitusevich,
Svetlana},
title = {{N}oise spectroscopy of tunable nanoconstrictions:
molecule-free and molecule-modified},
journal = {Nanotechnology},
volume = {29},
number = {38},
issn = {1361-6528},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2018-04484},
pages = {385704 -1-12},
year = {2018},
abstract = {Devices with metallic nanoconstrictions functionalized by
organic molecules are promising candidates for the role of
functional devices in molecular electronics. However, at the
moment little is known about transport and noise properties
of nanoconstriction devices of this kind. In this paper,
transport properties of bare gold and molecule-containing
tunable cross-section nanoconstrictions are studied using
low-frequency noise spectroscopy. Normalized noise power
spectral density (PSD) S I /I 2 dependencies are analyzed
for a wide range of sample resistances R from 10 Ohm to 10
MOhm. The peculiarities and physical background of the
flicker noise behavior in the low-bias regime are studied.
It is shown that modification of the sample surface with
benzene-1,4-dithiol molecules results in a decrease of the
normalized flicker noise spectral density level in the
ballistic regime of sample conductance. The characteristic
power dependence of normalized noise PSD as a function of
system resistance is revealed. Models describing noise
behavior for bare gold and BDT modified samples are
developed and compared with the experimental data for three
transport regimes: diffusive, ballistic and tunneling.
Parameters extracted from models by fitting are used for the
characterization of nanoconstriction devices.},
cin = {ICS-8},
ddc = {530},
cid = {I:(DE-Juel1)ICS-8-20110106},
pnm = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
pid = {G:(DE-HGF)POF3-523},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29968582},
UT = {WOS:000439242100001},
doi = {10.1088/1361-6528/aad0b7},
url = {https://juser.fz-juelich.de/record/850676},
}