Interlayer Coupling Controlled Ordering and Phases in Polar Vortex Superlattices.

ABSTRACT: The recent discovery of polar topological structures has opened the door for exciting physics and emergent properties. There is, however, little methodology to engineer stability and ordering in these systems, properties of interest for engineering emergent functionalities. Notably, when the surface area is extended to arbitrary thicknesses, the topological polar texture becomes unstable. Here we show that this instability of the phase is due to electrical coupling between successive layers. We demonstrate that this electrical coupling is indicative of an effective screening length in the dielectric, similar to the conductor-ferroelectric interface. Controlling the electrostatics of the superlattice interfaces, the system can be tuned between a pure topological vortex state and a mixed cla

SUBMITTER: Meisenheimer P 

PROVIDER: S-EPMC10941248 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature