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@ARTICLE{Fleck:826323,
author = {Fleck, Karsten and La Torre, Camilla and Aslam, Nabeel and
Hoffmann-Eifert, Susanne and Böttger, Ulrich and Menzel,
Stephan},
title = {{U}niting {G}radual and {A}brupt set {P}rocesses in
{R}esistive {S}witching {O}xides},
journal = {Physical review applied},
volume = {6},
number = {6},
issn = {2331-7019},
address = {College Park, Md. [u.a.]},
publisher = {American Physical Society},
reportid = {FZJ-2017-00556},
pages = {064015},
year = {2016},
abstract = {Identifying limiting factors is crucial for a better
understanding of the dynamics of the resistive switching
phenomenon in transition-metal oxides. This improved
understanding is important for the design of fast-switching,
energy-efficient, and long-term stable redox-based resistive
random-access memory devices. Therefore, this work presents
a detailed study of the set kinetics of valence change
resistive switches on a time scale from 10 ns to 104 s,
taking Pt/SrTiO3/TiN nanocrossbars as a model material. The
analysis of the transient currents reveals that the
switching process can be subdivided into a
linear-degradation process that is followed by a thermal
runaway. The comparison with a dynamical electrothermal
model of the memory cell allows the deduction of the
physical origin of the degradation. The origin is an
electric-field-induced increase of the oxygen-vacancy
concentration near the Schottky barrier of the Pt/SrTiO3
interface that is accompanied by a steadily rising local
temperature due to Joule heating. The positive feedback of
the temperature increase on the oxygen-vacancy mobility, and
thereby on the conductivity of the filament, leads to a
self-acceleration of the set process.},
cin = {PGI-7 / PGI-10},
ddc = {530},
cid = {I:(DE-Juel1)PGI-7-20110106 / I:(DE-Juel1)PGI-10-20170113},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000391036500003},
doi = {10.1103/PhysRevApplied.6.064015},
url = {https://juser.fz-juelich.de/record/826323},
}