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DOI	10.1073/pnas.1808414115
	How optical excitation controls the structure and properties of vanadium dioxide
	Otto M.R.; René de Cotret L.P.; Valverde-Chavez D.A.; Tiwari K.L.; Émond N.; Chaker M.; Cooke D.G.; Siwick B.J.
发表日期	2019
ISSN	0027-8424
起始页码	450
结束页码	455
卷号	116 期号:2
英文摘要	We combine ultrafast electron diffraction and time-resolved terahertz spectroscopy measurements to link structure and electronic transport properties during the photoinduced insulator–metal transitions in vanadium dioxide. We determine the structure of the metastable monoclinic metal phase, which exhibits antiferroelectric charge order arising from a thermally activated, orbital-selective phase transition in the electron system. The relative contribution of the photoinduced monoclinic and rutile metals to the time-dependent and pump-fluence–dependent multiphase character of the film is established, as is the respective impact of these two distinct phase transitions on the observed changes in terahertz conductivity. Our results represent an important example of how light can control the properties of strongly correlated materials and demonstrate that multimodal experiments are essential when seeking a detailed connection between ultrafast changes in optical-electronic properties and lattice structure. © 2019 National Academy of Sciences. All Rights Reserved.
英文关键词	Photoinduced phase transitions; Strongly correlated materials; Terahertz spectroscopy; Ultrafast electron scattering
语种	英语
scopus关键词	metal oxide; nanomaterial; unclassified drug; vanadium dioxide; Article; chemical analysis; complex formation; controlled study; crystal structure; dispersity; electric conductivity; electron diffraction; electron transport; excitation; phase transition; priority journal; quantitative analysis; structure activity relation; structure analysis; terahertz time domain spectroscopy; ultrafast electron diffraction
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160386
作者单位	Otto, M.R., Department of Physics, Center for the Physics of Materials, McGill University, Montreal, QC H3A 2T8, Canada; René de Cotret, L.P., Department of Physics, Center for the Physics of Materials, McGill University, Montreal, QC H3A 2T8, Canada; Valverde-Chavez, D.A., Department of Physics, Center for the Physics of Materials, McGill University, Montreal, QC H3A 2T8, Canada; Tiwari, K.L., Department of Physics, Center for the Physics of Materials, McGill University, Montreal, QC H3A 2T8, Canada; Émond, N., Institut National de la Recherche Scientifique, Centre Énergie Matériaux et Télécommunications, Université du Québec, Varennes, QC J3X 1S2, Canada; Chaker, M., Institut National de la Recherche Scientifique, Centre Énergie Matériaux et Télécommunications, Université du Québec, Varennes, QC J3X 1S2, Canada; Cooke, D.G., Department of Physics, Center for the Physics of Materials, McGill University, Montreal, QC H3A 2T8, Canada; Siwick, B.J., Department of Physics, Center for the Physics of Ma...
推荐引用方式 GB/T 7714	Otto M.R.,René de Cotret L.P.,Valverde-Chavez D.A.,et al. How optical excitation controls the structure and properties of vanadium dioxide[J],2019,116(2).
APA	Otto M.R..,René de Cotret L.P..,Valverde-Chavez D.A..,Tiwari K.L..,Émond N..,...&Siwick B.J..(2019).How optical excitation controls the structure and properties of vanadium dioxide.Proceedings of the National Academy of Sciences of the United States of America,116(2).
MLA	Otto M.R.,et al."How optical excitation controls the structure and properties of vanadium dioxide".Proceedings of the National Academy of Sciences of the United States of America 116.2(2019).