Manipulating topological transformations of polar structures through real-time observation of the dynamic polarization evolution.

ABSTRACT: Topological structures based on controllable ferroelectric or ferromagnetic domain configurations offer the opportunity to develop microelectronic devices such as high-density memories. Despite the increasing experimental and theoretical insights into various domain structures (such as polar spirals, polar wave, polar vortex) over the past decade, manipulating the topological transformations of polar structures and comprehensively understanding its underlying mechanism remains lacking. By conducting an in-situ non-contact bias technique, here we systematically investigate the real-time topological transformations of polar structures in PbTiO₃/SrTiO₃ multilayers at an atomic level. The procedure of vortex pair splitting and the transformation from polar vortex to polar

SUBMITTER: Du K 

PROVIDER: S-EPMC6814840 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature