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RETURN TO ARTICLES ASAPPREVFunctional Inorganic...Functional Inorganic Materials and DevicesNEXT Jiemei Long National-Provincial Laboratory of Special Function Thin Film Materials, School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China , Tingjun Wang School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China , * Congbing Tan National-Provincial Laboratory of Special Function Thin Film Materials, School of Materials Science...
Atomic-scale observations of electrical and mechanical manipulation of topological polar flux closure Xiaomei Li, Congbing Tan, Chang Liu, Peng Gao, Yuanwei Sun, Pan Chen, Mingqiang Li, Lei Liao, Ruixue Zhu, Jinbin Wang, Yanchong Zhao, Lifen Wang, Zhi Xu, Kaihui Liu, Xiangli Zhong, Jie Wang, Xuedong Bai Proceedings of the National Academy of Sciences Jul 2020, 202007248; DOI: 10.1073/pnas.2007248117
Abstract Ferroelectric vortices formed through complex lattice–charge interactions have great potential in applications for future nanoelectronics such as memories. For practical applications, it is crucial to manipulate these topological states under external stimuli. Here, we apply mechanical loads to locally manipulate the vortices in a PbTiO3/SrTiO3 superlattice via atomically resolved in-situ scanning transmission electron microscopy.
Abstract Recently, several captivating topological structures of electric dipole moments (e.g., vortex, flux closure) have been reported in ferroelectrics with reduced size/dimensions. However, accurate polarization distribution of these topological ferroelectric structures has never been experimentally obtained.
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