Low power nanoscale switching of VO2using carbon nanotube heaters

Stephanie Bohaichuk, Miguel Munoz Rojo, Gregory Pitner, Connor McClellan, Feifei Lian, Jason Li, Jaewoo Jeong, Mahesh Samant, Stuart Parkin, H. S.Philip Wong, Eric Pop

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Vanadium dioxide (VO2) is attractive for a variety of applications in optics and electronics, due to its abrupt insulator-metal transition (IMT) with > 103× change in resistance near room temperature. Use of VO2 in devices will require low power switching, with knowledge of the transition mechanism and behaviour down to nanoscale dimensions. To address this challenge, we use metallic carbon nanotubes (CNTs) with diameter 1 nm [1] to probe nanoscale IMT in VO2 for the first time. We find that a single CNT locally switches the VO2 at less than half the voltage and power otherwise required. Furthermore, to understand the nanoscale IMT we use scanning probe microscopy (SPM) techniques to study devices during operation.

Original languageEnglish
Title of host publication2018 76th Device Research Conference, DRC 2018
ISBN (Print)9781538630280
Publication statusPublished - 20 Aug 2018
Externally publishedYes
Event76th Device Research Conference, DRC 2018 - University of California, Santa Barbara, Santa Barbara, United States
Duration: 24 Jun 201827 Jun 2018
Conference number: 76


Conference76th Device Research Conference, DRC 2018
Abbreviated titleDRC 2018
Country/TerritoryUnited States
CitySanta Barbara
Internet address


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