@article {Manousou2021,
	title = {Two-step current-temperature-induced electrical and optical modifications in VO2 films around the metal-insulator transition},
	journal = {Journal of Applied Physics},
	volume = {130},
	number = {4},
	year = {2021},
	note = {cited By 0},
	abstract = {We report on two-step current-induced effects on the electrical, optical, and structural properties of VO2 films around the Metal{\textendash}Insulator Transition (MIT) in synergy with ambient temperature (T). Simultaneous electrical resistance and transmittance measurements of VO2 semitransparent thin films as a function of T show that the electric current modifies the MIT that takes place in two steps: an abrupt change that increases upon increasing current, implying the formation of larger metallic domains within the current path, accompanied by a smoother change that follows the temperature change. Resistance measurements of thicker bulk-like VO2 films have been also investigated exhibiting similar two-step behavior. By monitoring the specimen temperature (To) during resistance measurements, we show that the abrupt resistance step, accompanied by instantaneous heating/cooling events, occurs at temperatures lower than TMIT and is attributed to current-induced Joule heating effects. Moreover, by monitoring To during current{\textendash}voltage measurements, the role of T in the formation of two-step current modified MIT is highlighted. X-ray diffraction with in situ resistance measurements performed for various currents at room temperature as a function of To has shown that the current can cause partially MIT and structural phase transition, leading to an abrupt step of MIT. The formation of a rutile metallic phase of VO2 under high applied currents is clearly demonstrated by micro-Raman measurements. By controlling current in synergy with T below TMIT, the VO2 film can be driven to a two-step current-induced MIT as gradually a larger part of the film is transformed into a rutile metallic phase.. {\textcopyright} 2021 Author(s).},
	doi = {10.1063/5.0052954},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111467406\&doi=10.1063\%2f5.0052954\&partnerID=40\&md5=fa50c3761f1427a82677b25cd6d8e4c6},
	author = {Manousou, D.K. and Gardelis, S. and Calamiotou, M. and V. Likodimos and Syskakis, E.}
}
