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Tytuł:
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Role of thermal heating on the voltage induced insulator-metal transition in VO2.
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Autorzy:
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Zimmers A; Laboratoire de Physique et d'Etude des Matériaux, UMR 8213, ESPCI-ParisTech-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris, France. />Aigouy L
Mortier M
Sharoni A
Wang S
West KG
Ramirez JG
Schuller IK
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Źródło:
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Physical review letters [Phys Rev Lett] 2013 Feb 01; Vol. 110 (5), pp. 056601. Date of Electronic Publication: 2013 Jan 29.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: New York : American Physical Society
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Entry Date(s):
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Date Created: 20130219 Date Completed: 20130405 Latest Revision: 20130218
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Update Code:
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20240104
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DOI:
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10.1103/PhysRevLett.110.056601
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PMID:
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23414038
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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.
