@article{258a5437aa244d34bd1a93d59e037215,
title = "Nanoscale structural evolution of electrically driven insulator to metal transition in vanadium dioxide",
abstract = "The structural evolution of tensile strained vanadium dioxide thin films was examined across the electrically driven insulator-to-metal transition by nanoscale hard X-ray diffraction. A metallic filament with rutile (R) structure was found to be the dominant conduction pathway for an electrically driven transition, while the majority of the channel area remained in the monoclinic M1 phase. The filament dimensions were estimated using simultaneous electrical probing and nanoscale X-ray diffraction. Analysis revealed that the width of the conducting channel can be tuned externally using resistive loads in series, enabling the M1/R phase ratio in the phase coexistence regime to be tuned.",
author = "Eugene Freeman and Greg Stone and Nikhil Shukla and Hanjong Paik and Moyer, {Jarrett A.} and Zhonghou Cai and Haidan Wen and Roman Engel-Herbert and Schlom, {Darrell G.} and Venkatraman Gopalan and Suman Datta",
note = "Funding Information: The authors would like to thank Professor Srinivas Tadigadapa of Penn State Electrical Engineering for use of his wire bonder and Peter Schiffer at the University of Illinois for help with the transport measurements. We also wish to acknowledge useful discussions with Martin Holt of Argonne National Laboratory. Work at Argonne was supported by the U.S Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. We acknowledge the financial support of the Office of Naval Research through Award N00014-11-1-0665 and the National Science Foundation through Award DMR-0820404.",
year = "2013",
month = dec,
day = "23",
doi = "10.1063/1.4858468",
language = "English (US)",
volume = "103",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "26",
}