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@ARTICLE{Baeumer:837189,
author = {Baeumer, Christoph and Valenta, Richard and Schmitz,
Christoph and Locatelli, Andrea and Menteş, Tevfik Onur and
Rogers, Steven P. and Sala, Alessandro and Raab, Nicolas and
Nemsak, Slavomir and Shim, Moonsub and Schneider, Claus M.
and Menzel, Stephan and Waser, R. and Dittmann, Regina},
title = {{S}ubfilamentary {N}etworks {C}ause {C}ycle-to-{C}ycle
{V}ariability in {M}emristive {D}evices},
journal = {ACS nano},
volume = {11},
number = {7},
issn = {1936-086X},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2017-06168},
pages = {6921 - 6929},
year = {2017},
abstract = {A major obstacle for the implementation of redox-based
memristive memory or logic technology is the large
cycle-to-cycle and device-to-device variability. Here, we
use spectromicroscopic photoemission threshold analysis and
operando XAS analysis to experimentally investigate the
microscopic origin of the variability. We find that some
devices exhibit variations in the shape of the conductive
filament or in the oxygen vacancy distribution at and around
the filament. In other cases, even the location of the
active filament changes from one cycle to the next. We
propose that both effects originate from the coexistence of
multiple (sub)filaments and that the active,
current-carrying filament may change from cycle to cycle.
These findings account for the observed variability in
device performance and represent the scientific basis,
rather than prior purely empirical engineering approaches,
for developing stable memristive devices.},
cin = {PGI-7 / PGI-6},
ddc = {540},
cid = {I:(DE-Juel1)PGI-7-20110106 / I:(DE-Juel1)PGI-6-20110106},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000406649700040},
doi = {10.1021/acsnano.7b02113},
url = {https://juser.fz-juelich.de/record/837189},
}