TY  - JOUR
AU  - Menzel, S.
AU  - Waters, M.
AU  - Marchewka, A.
AU  - Böttger, U.
AU  - Dittmann, R.
AU  - Waser, R.
TI  - Origin of the ultra-nonlinear switching kinetics in oxide-based resistive switches
JO  - Advanced functional materials
VL  - 21
SN  - 1616-301X
CY  - Weinheim
PB  - Wiley-VCH
M1  - PreJuSER-18245
SP  - 4487 - 4492
PY  - 2011
N1  - We are indebted to Rainer Bruchhaus, Paul Meuffels, and Kristof Szot for many interesting discussions. This work was in part financially supported by Intel Corp., Santa Clara, and this funding is gratefully acknowledged.
AB  - Experimental pulse lengthpulse voltage studies of SrTiO3 memristive cells are reported, which reveal nonlinearities in the switching kinetics of more than nine orders of magnitude. The results are interpreted using an electrothermal 2D finite element model. The nonlinearity arises from a temperature increase in a few-nanometer-thick disc-shaped region at the Ti electrode and a corresponding exponential increase in oxygen-vacancy mobility. The model fully reproduces the experimental data and it provides essential design rules for optimizing the cell concept of nanoionic resistive memories. The model is generic in nature: it is applicable to all those oxides which become n-conducting upon chemical reduction and which show significant ion conductivity at elevated temperatures.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000297501000012
DO  - DOI:10.1002/adfm.201101117
UR  - https://juser.fz-juelich.de/record/18245
ER  -