Dianxiang Ji

TL;DR: It is found that freestanding BiFeO3 films exhibit unexpected and giant tetragonality and polarization when approaching the 2D limit, and the absence of a critical thickness for stabilizing the crystalline order in thefreestanding ultrathin oxide films is demonstrated.

TL;DR: The strain dynamics of ultrathin VO2 film on TiO2 substrate are directly recorded and the intrinsic modulation process is revealed by means of synchrotron radiation and first-principles calculations, showing that the MIT process of the obtained VO2 films can be modulated continuously via the interfacial strain.

TL;DR: A real-space imaging technique that combines scanning transmission electron microscopy with an angle-resolved pixellated fast-electron detector is used to image the charge distribution in SrTiO3, BiFeO3 and the junction between them, and discovers charge accumulation at the interface that is induced by the penetration of the polarization field of Bi FeO3.

TL;DR: In this article , a room-temperature skyrmion-like polar nanodomains in lead titanate/strontium titanate bilayers transferred onto silicon were realized.

TL;DR: In this paper, the authors report the in situ observation of atomic layer-by-layer inner potential variations by analysing the Kikuchi lines during epitaxial growth of strontium titanate, providing a powerful real-time technique to monitor and control the chemical composition during growth.