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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; Zou, CW; Wu, ZY;吴自玉
2014
发表期刊NANO LETTERS
卷号14期号:7页码:4036-4043
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.
关键词VO2 metal insulator transition ultrathin films synchrotron radiation X-ray diffraction
学科领域Chemistry; Science & Technology - Other Topics; Materials Science; Physics
DOI10.1021/nl501480f
收录类别SCI
WOS记录号WOS:000338979700052
引用统计
被引频次:85[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225195
专题多学科研究中心
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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.
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