Local temperature redistribution and structural transition during joule-heating-driven conductance switching in VO2

Suhas Kumar; Matthew D Pickett; John Paul Strachan; Gary Gibson; Yoshio Nishi; R Stanley Williams

doi:10.1002/adma.201302046

Local temperature redistribution and structural transition during joule-heating-driven conductance switching in VO2

Adv Mater. 2013 Nov 13;25(42):6128-32. doi: 10.1002/adma.201302046. Epub 2013 Jul 19.

Authors

Suhas Kumar¹, Matthew D Pickett, John Paul Strachan, Gary Gibson, Yoshio Nishi, R Stanley Williams

Affiliation

¹ Hewlett-Packard Laboratories, 1501 Page Mill Rd, Palo Alto, CA, 94304, USA; Stanford University, Stanford, CA, 94305, USA.

PMID: 23868142
DOI: 10.1002/adma.201302046

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.

Keywords: joule-heating; memristors; mott transition; peierls transition; vanadium dioxide.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.