Local Temperature Redistribution and Structural Transition During Joule-Heating-Driven Conductance Switching in VO2

Abstract

Joule-heating induced conductance-switching is studied in VO2, a Mott insulator. Complementary in-situ techniques including optical characterization, blackbody microscopy, scanning transmission x-ray microscopy (STXM) and numerical simulations are used. Abrupt redistribution in local temperature is shown to occur upon conductance-switching along with a structural phase transition, at the same current.

References in corpus (4)

• Mott transition in VO2 revealed by infrared spectroscopy and nano-imaging
• Universality and Critical Behavior at the Mott transition
• Electric-field-driven phase transition in vanadium dioxide
• Current oscillations in Vanadium Dioxide: evidence for electrically triggered percolation avalanches

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