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@ARTICLE{Ielmini:15831,
author = {Ielmini, D. and Bruchhaus, R. and Waser, R.},
title = {{T}hermochemical resistive switching: materials,
mechanisms, and scaling projections},
journal = {Phase transitions},
volume = {84},
issn = {0141-1594},
address = {London [u.a.]},
publisher = {Taylor $\&$ Francis},
reportid = {PreJuSER-15831},
pages = {570 - 602},
year = {2011},
note = {The support of and fruitful discussion with R. Weng, C.
Kuegeler, C. Cagli, F. Nardi, and A. L. Lacaita are
gratefully acknowledged. Part of the study was supported by
the EMMA project. D. I. gratefully acknowledges Fondazione
Cariplo (Grant 2010-0500) for financial support.},
abstract = {In this article, resistive switching based on the
thermochemical mechanism (TCM) is reviewed. This mechanism
is observed when thermochemical redox processes dominate
over electrochemical processes. As the switching is based on
thermal effects, it is inherently unipolar, i.e., the
transitions between the resistive states can be induced by
the same bias voltage polarity. NiO has emerged as a "model
material" for resistive switching based on the TCM effect
and the discussion of the resistance states and the
switching processes are focused on this material with the
appropriate electrodes, mainly Pt. Unipolar switching is
unambiguously filamentary. Conductive filaments are formed
during the electroforming process needed prior to memory
switching. The SET operation is interpreted as a sequence of
threshold switching and subsequent Joule heating which
triggers local redox reactions in which oxygen deficient NiO
and, if the amount of released oxygen exceeds a certain
amount, also metallic Ni will form. The RESET transition can
be described as a thermally activated solid-state process
resulting in a local decrease of the metallic Ni species. In
terms of operation and reliability, a trade-off between
RESET current reduction and retention was experimentally
found. This is due to the decreasing long-term stability of
the filaments with decreasing size. In addition, the scaling
projection of a TCM-based memory technology with NiO is
directly related to RESET currents and the availability of
appropriate select devices.},
keywords = {J (WoSType)},
cin = {JARA-FIT / PGI-7},
ddc = {540},
cid = {$I:(DE-82)080009_20140620$ / I:(DE-Juel1)PGI-7-20110106},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Crystallography / Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000299703000002},
doi = {10.1080/01411594.2011.561478},
url = {https://juser.fz-juelich.de/record/15831},
}