Engineering polar vortex from topologically trivial domain architecture.

ABSTRACT: Topologically nontrivial polar structures are not only attractive for high-density data storage, but also for ultralow power microelectronics thanks to their exotic negative capacitance. The vast majority of polar structures emerging naturally in ferroelectrics, however, are topologically trivial, and there are enormous interests in artificially engineered polar structures possessing nontrivial topology. Here we demonstrate reconstruction of topologically trivial strip-like domain architecture into arrays of polar vortex in (PbTiO₃)₁₀/(SrTiO₃)₁₀ superlattice, accomplished by fabricating a cross-sectional lamella from the superlattice film. Using a combination of techniques for polarization mapping, atomic imaging, and three-dimensional structure

SUBMITTER: Tan C 

PROVIDER: S-EPMC8324780 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature