Strain Dynamics of Ultrathin VO2 Film Grown on TiO2 (001) and the Associated Phase Transition Modulation

	Strain Dynamics of Ultrathin VO2 Film Grown on TiO2 (001) and the Associated Phase Transition Modulation
	Fan, LL; Chen, S; Luo, ZL; Liu, QH; Wu, YF; Song, L; Ji, DX; Wang, P; Chu, WS; Gao, C
刊名	NANO LETTERS
	2014
卷号	14 期号:7 页码:4036-4043
关键词	VO2 metal insulator transition ultrathin films synchrotron radiation X-ray diffraction
英文摘要	Tuning the metal insulator transition (MIT) behavior of VO2 film through the interfacial strain is effective for practical applications. However, the mechanism for strain-modulated MIT is still under debate. Here we directly record the strain dynamics of ultrathin VO2 film on TiO2 substrate and reveal the intrinsic modulation process by means of synchrotron radiation and first-principles calculations. It is observed that the MIT process of the obtained VO2 films can be modulated continuously via the interfacial strain. The relationship between the phase transition temperature and the strain evolution is established from the initial film growth. From the interfacial strain dynamics and theoretical calculations, we claim that the electronic orbital occupancy is strongly affected by the interfacial strain, which changes also the electron electron correlation and controls the phase transition temperature. These findings open the possibility of an active tuning of phase transition for the thin VO2 film through the interfacial lattice engineering.
学科主题	Chemistry; Science & Technology - Other Topics; Materials Science; Physics
收录类别	SCI
WOS记录号	WOS:000338979700052
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225195]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Fan, LL,Chen, S,Luo, ZL,et al. Strain Dynamics of Ultrathin VO2 Film Grown on TiO2 (001) and the Associated Phase Transition Modulation[J]. NANO LETTERS,2014,14(7):4036-4043.
APA	Fan, LL.,Chen, S.,Luo, ZL.,Liu, QH.,Wu, YF.,...&Wu, ZY；吴自玉.(2014).Strain Dynamics of Ultrathin VO2 Film Grown on TiO2 (001) and the Associated Phase Transition Modulation.NANO LETTERS,14(7),4036-4043.
MLA	Fan, LL,et al."Strain Dynamics of Ultrathin VO2 Film Grown on TiO2 (001) and the Associated Phase Transition Modulation".NANO LETTERS 14.7(2014):4036-4043.