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@ARTICLE{Yang:155488,
author = {Yang, Yuchao and Gao, Peng and Li, Linze and Pan, Xiaoqing
and Tappertzhofen, Stefan and Choi, ShinHyun and Waser,
Rainer and Valov, Ilia and Lu, Wei D.},
title = {{E}lectrochemical dynamics of nanoscale metallic inclusions
in dielectrics},
journal = {Nature Communications},
volume = {5},
issn = {2041-1723},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2014-04654},
pages = {4232},
year = {2014},
abstract = {Nanoscale metal inclusions in or on solid-state dielectrics
are an integral part of modern electrocatalysis,
optoelectronics, capacitors, metamaterials and memory
devices. The properties of these composite systems strongly
depend on the size, dispersion of the inclusions and their
chemical stability, and are usually considered constant.
Here we demonstrate that nanoscale inclusions (for example,
clusters) in dielectrics dynamically change their shape,
size and position upon applied electric field. Through
systematic in situ transmission electron microscopy studies,
we show that fundamental electrochemical processes can lead
to universally observed nucleation and growth of metal
clusters, even for inert metals like platinum. The clusters
exhibit diverse dynamic behaviours governed by kinetic
factors including ion mobility and redox rates, leading to
different filament growth modes and structures in memristive
devices. These findings reveal the microscopic origin behind
resistive switching, and also provide general guidance for
the design of novel devices involving electronics and
ionics.},
cin = {PGI-7},
ddc = {500},
cid = {I:(DE-Juel1)PGI-7-20110106},
pnm = {421 - Frontiers of charge based Electronics (POF2-421)},
pid = {G:(DE-HGF)POF2-421},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000338840000001},
pubmed = {pmid:24953477},
doi = {10.1038/ncomms5232},
url = {https://juser.fz-juelich.de/record/155488},
}