CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Suppression of Structural Phase Transition in VO2 by Epitaxial Strain in Vicinity of Metal-insulator Transition
Yang, MM; Yang, YJ; Hong, B; Wang, LX; Hu, K; Dong, YQ; Xu, H; Huang, HL; Zhao, JT; Chen, HP; Song, L; Ju, HX; Zhu, JF; Bao, J; Li, XG; Gu, YL; Yang, TY; Gao, XY; Luo, ZL; Gao, C; Gao, C (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China.; Gao, C (reprint author), Univ Sci & Technol China, Collaborat Innovat Ctr Chem Energy Mat, Hefei 230026, Anhui, Peoples R China.; Gao, C (reprint author), Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China.
2016
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume6Issue:-Pages:
Subtype期刊文献
AbstractMechanism of metal-insulator transition (MIT) in strained VO2 thin films is very complicated and incompletely understood despite three scenarios with potential explanations including electronic correlation (Mott mechanism), structural transformation (Peierls theory) and collaborative Mott-Peierls transition. Herein, we have decoupled coactions of structural and electronic phase transitions across the MIT by implementing epitaxial strain on 13-nm-thick (001)-VO2 films in comparison to thicker films. The structural evolution during MIT characterized by temperature-dependent synchrotron radiation high-resolution X-ray diffraction reciprocal space mapping and Raman spectroscopy suggested that the structural phase transition in the temperature range of vicinity of the MIT is suppressed by epitaxial strain. Furthermore, temperature-dependent Ultraviolet Photoelectron Spectroscopy (UPS) revealed the changes in electron occupancy near the Fermi energy E-F of V 3d orbital, implying that the electronic transition triggers the MIT in the strained films. Thus the MIT in the bi-axially strained VO2 thin films should be only driven by electronic transition without assistance of structural phase transition. Density functional theoretical calculations further confirmed that the tetragonal phase across the MIT can be both in insulating and metallic states in the strained (001)-VO2/TiO2 thin films. This work offers a better understanding of the mechanism of MIT in the strained VO2 films.
KeywordDioxide Thin-films Vanadium Dioxide Mott Transition Tio2 001 Spectroscopy Modulation Temperature Devices
DOI10.1038/srep23119
Indexed BySCI
Language英语
WOS IDWOS:000372053600001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25853
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorYang, YJ; Luo, ZL; Gao, C (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China.; Gao, C (reprint author), Univ Sci & Technol China, Collaborat Innovat Ctr Chem Energy Mat, Hefei 230026, Anhui, Peoples R China.; Gao, C (reprint author), Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China.
Recommended Citation
GB/T 7714
Yang, MM,Yang, YJ,Hong, B,et al. Suppression of Structural Phase Transition in VO2 by Epitaxial Strain in Vicinity of Metal-insulator Transition[J]. SCIENTIFIC REPORTS,2016,6(-):—.
APA Yang, MM.,Yang, YJ.,Hong, B.,Wang, LX.,Hu, K.,...&Gao, C .(2016).Suppression of Structural Phase Transition in VO2 by Epitaxial Strain in Vicinity of Metal-insulator Transition.SCIENTIFIC REPORTS,6(-),—.
MLA Yang, MM,et al."Suppression of Structural Phase Transition in VO2 by Epitaxial Strain in Vicinity of Metal-insulator Transition".SCIENTIFIC REPORTS 6.-(2016):—.
Files in This Item:
File Name/Size DocType Version Access License
Suppression of Struc(1591KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang, MM]'s Articles
[Yang, YJ]'s Articles
[Hong, B]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, MM]'s Articles
[Yang, YJ]'s Articles
[Hong, B]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, MM]'s Articles
[Yang, YJ]'s Articles
[Hong, B]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Suppression of Structural Phase Transition in VO2 by Epitaxial Strain in Vicinity of Metal-insulator Transition.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.