title: Role of thermal heating on the voltage induced insulator-metal transition in VO2.
abstract: We show that the main mechanism for the dc voltage or dc current induced insulator-metal transition in vanadium dioxide VO(2) is due to local Joule heating and not a purely electronic effect. This "tour de force" experiment was accomplished by using the fluorescence spectra of rare-earth doped micron sized particles as local temperature sensors. As the insulator-metal transition is induced by a dc voltage or dc current, the local temperature reaches the transition temperature indicating that Joule heating plays a predominant role. This has critical implications for the understanding of the dc voltage or dc current induced insulator-metal transition and has a direct impact on applications which use dc voltage or dc current to externally drive the transition.
authors: Laboratoire de Physique et d'Etude des Matériaux, UMR 8213, ESPCI-ParisTech-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris, France. alexandre.zimmers@espci.fr
authors: A
authors: A
authors: Zimmers
authors: L
authors: L
authors: Aigouy
authors: M
authors: M
authors: Mortier
authors: A
authors: A
authors: Sharoni
authors: Siming
authors: S
authors: Wang
authors: K G
authors: KG
authors: West
authors: J G
authors: JG
authors: Ramirez
authors: Ivan K
authors: IK
authors: Schuller