Speaker
Stefan Guénon
(Department of Physics and Center for Advanced Nanoscience, University of California San Diego)
Description
S. Guénon (1)
S. Scharinger (2)
S. Wang (1)
J. G. Ramirez (1)
D. Koelle (2)
R. Kleiner (2)
Ivan K. Schuller (1)
(1) Department of Physics and Center for Advanced Nanoscience, University of California San Diego
(2 ) Physikalisches Institut–Center for Collective Quantum Phenomena and their Applications in LISA+, Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany
We have measured the electric properties of a 200 micron wide and 10 micron long bridge in a 100 nm thick V2O3 thin film at the metal-insulator transition. Discontinuous jumps to lower voltages in the current voltage characteristic (IV) followed by a more or less constant voltage progression of the curve for high currents indicate an electric breakdown of the device. In addition, the IV curve shows hysteresis and a training effect, i.e. the succeeding IV loops are different from the first IV loop of the thermal cycled device. Low temperature scanning electron microscopy indicates that the electric breakdown is caused by a combination of several mechanism like self-heating as well as percolative and bolt-like switching.
This work has been supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences under Award FG03-87ER-45332.
Primary author
Stefan Guénon
(Department of Physics and Center for Advanced Nanoscience, University of California San Diego)
