Journal
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Volume 460, Issue -, Pages 549-550Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physc.2007.03.351
Keywords
VO2 film; resistance switching; conducting filament
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We investigated the effect of a strong electric pulse on the insulator-metal phase transition Of VO2 films. As the voltage amplitude increases, we found several jumps of the current value, which are attributable to the multi-level resistance switching. By monitoring the sample with an optical microscope, we observed that the current jumps accompany inhomogeneous developments of metallic area. We argued that the formation of the conducting filaments is responsible for the multi-level switching and the electric-pulse-induced insulator-metal transition Of VO2 films. (c) 2007 Elsevier B.V. All rights reserved.
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