| Autor: |
Zimmers A; Laboratoire de Physique et d'Etude des Matériaux, UMR 8213, ESPCI-ParisTech-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris, France. alexandre.zimmers@espci.fr, Aigouy L, Mortier M, Sharoni A, Wang S, West KG, Ramirez JG, Schuller IK |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2013 Feb 01; Vol. 110 (5), pp. 056601. Date of Electronic Publication: 2013 Jan 29. |
| DOI: |
10.1103/PhysRevLett.110.056601 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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