TY  - JOUR
AU  - Menke, T.
AU  - Meuffels, P.
AU  - Dittmann, R.
AU  - Szot, K.
AU  - Waser, R.
TI  - Separation of bulk and interface contributions to electroforming and resistive switching behavior of epitaxial Fe-doped SrTiO3
JO  - Journal of applied physics
VL  - 105
SN  - 0021-8979
CY  - Melville, NY
PB  - American Institute of Physics
M1  - PreJuSER-3983
SP  - 066104
PY  - 2009
N1  - We thank R. Muenstermann and K. Shibuya for helpful discussions and Intel Inc. for financial support.
AB  - We succeeded in the separation of bulk and interface contributions to the electroforming and resistive switching behavior of Pt/STO(Fe)/Nb:STO devices by performing impedance spectroscopy. Two distinctive features observed in the impedance spectra could be assigned to the STO(Fe) bulk and to the depletion layer of the Pt/STO(Fe) Schottky contact. We attribute the resistance change during the dc forming process to a local bypassing of the depletion layer caused by oxygen effusion to the environment. By comparing the impedance spectra in the resistive "on" and "off" states, we propose that the resistance of the STO(Fe)/Nb:STO interface locally changes during the switching process.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000264774000203
DO  - DOI:10.1063/1.3100209
UR  - https://juser.fz-juelich.de/record/3983
ER  -