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@ARTICLE{Waser:14012,
author = {Waser, R. and Dittmann, R. and Salinga, M. and Wuttig, M.},
title = {{T}he role of defects in resistively switching
chalcogenides},
journal = {International journal of materials research},
volume = {101},
issn = {1862-5282},
address = {München},
publisher = {Hanser},
reportid = {PreJuSER-14012},
pages = {182 - 198},
year = {2010},
note = {Record converted from VDB: 12.11.2012},
abstract = {This overview describes the present Understanding of
resistive switching phenomena encountered in
chalcogenide-based cells which may be utilized in
energy-efficient nonvolatile memory devices and in
array-based logic applications. We introduce the basic
operation principle of the phase change mechanism, the
thermochemical mechanism, and the valence change mechanism
and we discuss the crucial role of structural defects in the
switching processes. We show how this role is determined by
the atomic Structure of the defects, the electronic defect
states, and/or the ion transport properties of the defects.
The electronic structure of the systems in different
resistance states is described in the light of the chemical
bonds involved. While for phase change alloys the interplay
of ionicity and hybridization in the crystalline and ill the
amorphous phase determine the resistances, the local redox
reaction at the site of extended defects, the change in the
oxygen stoichiometry. and the resulting change ill the
occupancy of relevant orbitals play the major role in
transition metal oxides which switch by the thermochemical
and the valence change mechanism. Phase transformations are
not only discussed for phase change alloys but also for
redox-related switching processes. The switching kinetics as
well as the ultimate scalability of switching cells are
related to structural defects in the materials.},
keywords = {J (WoSType)},
cin = {IFF-6 / JARA-FIT},
ddc = {670},
cid = {I:(DE-Juel1)VDB786 / $I:(DE-82)080009_20140620$},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Metallurgy $\&$ Metallurgical Engineering},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000275653100005},
doi = {10.3139/146.100276},
url = {https://juser.fz-juelich.de/record/14012},
}