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Electric-Field Induced Abrupt and Multi-Step Insulator-Metal Transitions in Vanadium Dioxide Nanobeams

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Both abrupt and multi-step Insulator-metal transitions triggered by applied voltage (electric field) were observed in VO2 nanobeams. The multi-step transition occurs due to nucleation and subsequent expansion of multiple insulating and metallic domains across the nanobeam whereas the abrupt transition results from the propagation of a parallel metallic domain across the nanobeam. A simple power dissipation based model was also used to study the local temperature evolution during these transitions in the nanobeam. Both types of transitions are suitable for prospective application in resistive memory and switches.
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Keywords: Domains; Insulator-Metal Transitions; Joule-Heating; Vanadium Dioxide Nanobeams

Document Type: Research Article

Affiliations: 1: School of Electronic and Electrical Engineering and Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Korea 2: School of Mechanical and Advanced Materials Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-805, Korea

Publication date: 01 June 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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