Local thermal heating in VO$_2$ electric-field-induced metal insulator transition

ORAL

Abstract

Over recent years, the insulator to metal transition (IMT) of the vanadium dioxide (VO$_2$) Mott insulator has been revisited revealing an electric-field-induced resistance switching. Whether this feature is purely due to an electrical field effect or due to some Joule heating is still under debate. Here we report a local temperature measurement in a 10$\mu$m and a 20$\mu$m VO$_2$ junction while going through the resistance switching. The sample was placed at $\Delta$T=15K below 340K (the thermally induced insulator to metal transition). When ramping up the voltage across the junction we find that the local heating inside the VO$_2$ junction is close to 15K. This data suggests that in these temperature, current and voltage ranges, the field induced IMT can be explained by local Joule heating. Work supported by the French ANR-09-BLAN-0388-01 and the US DOE and AFOSR.

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Authors

  • A. Zimmers

    Laboratoire de Physique et d'Etude des Materiaux (LPEM), ESPCI-ParisTech-UPMC-CNRS, Paris, France

  • L. Aigouy

    Laboratoire de Physique et d'Etude des Materiaux (LPEM), ESPCI-ParisTech-UPMC-CNRS, Paris, France

  • A. Sharoni

    Department of Physics and Institute of Nanotechnology, Bar Ilan University, Ramat Gan, Israel, Dept. of Physics and Institute of Nanotechnology, Bar Ilan University, Ramat Gan, Israel

  • S. Wang

    Department of Physics and Center for Advanced Nanoscience, Materials Science and Engineering Program, University of California San Diego, Department of Physics and Materials Science and Engineering and Center for Advanced Nanoscience, UCSD, La Jolla, CA, USA

  • Juan Ramirez

    Department of Physics and Center for Advanced Nanoscience, UCSD, La Jolla, CA, USA, University of California, San Diego

  • Ivan Schuller

    Center for Advanced Nanoscience, University of California San Diego, Univ of California - San Diego, Department of Physics and Materials Science and Engineering and Center for Advanced Nanoscience, UCSD, La Jolla, CA, USA, University of California, San Diego, University of California - San Diego, Center for Advanced Nanoscience, UCSD