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@ARTICLE{vandenHurk:279251,
author = {van den Hurk, Jan and Menzel, Stephan and Waser, R. and
Valov, Ilia},
title = {{P}rocesses and {L}imitations during {F}ilament {F}ormation
and {D}issolution in {G}e{S} $_{x}$ -based {R}e{RAM}
{M}emory {C}ells},
journal = {The journal of physical chemistry / C},
volume = {119},
number = {32},
issn = {1932-7455},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2015-07266},
pages = {18678 - 18685},
year = {2015},
abstract = {The SET and RESET switching kinetics of Ag–GeSx-based ECM
memory cells are experimentally investigated. The results
were qualitatively and quantitatively reproduced by our
simulation model, accounting for a tunneling gap between the
tip of the growing filament and the active electrode. Key
processes are the nucleation, the electron transfer at the
interfaces, and ionic hopping in the electrolyte.
Current–voltage sweeps and pulse measurements were used to
study the switching kinetics with respect to variety of
factors like voltage, current, resistance, time, electrolyte
thickness, and stoichiometry. Multilevel operations through
the adjustability of the ON resistance by current compliance
and sweep rate were confirmed. The SET kinetics for low
voltages was limited by the nucleation process. SET time and
SET voltage strongly depend on the Ag-ion normalized
concentration in the electrolyte. The RESET behavior was
mostly independent of the current compliance and the ON
resistance. However, lower ON resistances require higher
RESET currents but at the same time the RESET time was
independent of the ON resistance for nearly 2 orders of
magnitude. By pulsed measurements of the RESET kinetics two
voltage ranges in the RESET time versus RESET voltage
behavior were identified for the first time. Limiting
factors in these two ranges were found to be the electron
transfer and the ion migration for low and high voltages,
respectively.},
cin = {PGI-7},
ddc = {540},
cid = {I:(DE-Juel1)PGI-7-20110106},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000359683800074},
doi = {10.1021/acs.jpcc.5b03622},
url = {https://juser.fz-juelich.de/record/279251},
}