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@ARTICLE{Choi:49727,
author = {Choi, B. J. and Jeong, D. S. and Kim, S. K. and Rohde, C.
and Choi, S. and Oh, J. H. and Kim, H. J. and Hwang, C. S.
and Waser, R. and Reichenberg, B. and Tiedke, S.},
title = {{R}esistive switching mechanism of {T}i{O}2 thin films
grown by atomic-layer deposition},
journal = {Journal of applied physics},
volume = {98},
issn = {0021-8979},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {PreJuSER-49727},
pages = {33715},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {The resistive switching mechanism of 20- to 57-nm-thick
TiO2 thin films grown by atomic-layer deposition was studied
by current-voltage measurements and conductive atomic force
microscopy. Electric pulse-induced resistance switching was
repetitively (> a few hundred times) observed with a
resistance ratio > 10(2). Both the low- and high-resistance
states showed linear log current versus log voltage graphs
with a slope of 1 in the low-voltage region where switching
did not occur. The thermal stability of both conduction
states was also studied. Atomic force microscopy studies
under atmosphere and high-vacuum conditions showed that
resistance switching is closely related to the formation and
elimination of conducting spots. The conducting spots of the
low-resistance state have a few tens times higher
conductivity than those of the high-resistance state and
their density is also a few tens times higher which results
in a similar to 10(3) times larger overall conductivity. An
interesting finding was that the area where the conducting
spots do not exist shows a few times different resistance
between the low- and high-resistance state films. It is
believed that this resistance change is due to the
difference in point defect density that was generated by the
applied bias field. The point defects possibly align to form
tiny conducting filaments in the high-resistance state and
these tiny conducting filaments gather together to form
stronger and more conducting filaments during the transition
to the low-resistance state. (c) 2005 American Institute of
Physics.},
keywords = {J (WoSType)},
cin = {IFF-IEM / CNI},
ddc = {530},
cid = {I:(DE-Juel1)VDB321 / I:(DE-Juel1)VDB381},
pnm = {Materialien, Prozesse und Bauelemente für die Mikro- und
Nanoelektronik},
pid = {G:(DE-Juel1)FUEK252},
shelfmark = {Physics, Applied},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000231246100059},
doi = {10.1063/1.2001146},
url = {https://juser.fz-juelich.de/record/49727},
}