论文标题
薄VO2/TIO2（001）膜中金属绝缘子过渡的应变诱导的轨道动力学
Strain induced orbital dynamics across the Metal Insulator transition in thin VO2/TiO2(001) films
论文作者
论文摘要
VO2是一种密切相关的材料，它经过可逆金属绝缘子过渡（MIT），并在加热后与结构相变（T = 67°C）结合。自发现以来，长期以来一直在争论绝缘状态的性质，并提出了不同的固态机制来解释其性质：莫特 - 哈伯德相关性，peierls扭曲或两者的组合。此外，现在仍然在不同程度的自由度之间的相互作用上缺乏共识：电荷，晶格，轨道及其对麻省理工学院的贡献。在本手稿中，我们将在MIT上调查由应用于薄VO2膜的拉伸应变引起的轨道演化。紧张的膜允许研究轨道和晶格自由度之间的相互作用，并阐明了MIT的性能。
VO2 is a strongly correlated material, which undergoes a reversible metal insulator transition (MIT) coupled to a structural phase transition upon heating (T= 67° C). Since its discovery the nature of the insulating state has long been debated and different solid-state mechanisms have been proposed to explain its nature: Mott-Hubbard correlation, Peierls distortion or a combination of both. Moreover, still now there is a lack of consensus on the interplay between the different degrees of freedom: charge, lattice, orbital and how they contribute to the MIT. In this manuscript we will investigate across the MIT the orbital evolution induced by a tensile strain applied to thin VO2 films. The strained films allowed to study the interplay between orbital and lattice degrees of freedom and to clarify MIT properties.
