Switchable topological polar states in epitaxial BaTiO₃ nanoislands on silicon.

ABSTRACT: A fascinating aspect of nanoscale ferroelectric materials is the emergence of topological polar textures, which include various complex and stable polarization configurations. The manipulation of such topological textures through external stimuli like electric fields holds promise for advanced nanoelectronics applications. There are, however, several challenges to reach potential applications, among which reliably creating and controlling these textures at the nanoscale on silicon, and with lead-free compounds. We report the realization of epitaxial BaTiO₃ nanoislands on silicon, with a lateral size as small as 30-60 nm, and demonstrate stable center down-convergent polarization domains that can be reversibly switched by an electric field to center up-divergent domains. Piezores

SUBMITTER: Olaniyan I 

PROVIDER: S-EPMC11579377 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature