Thick Does the Trick: Genesis of Ferroelectricity in 2D GeTe-Rich (GeTe)_m (Sb₂ Te₃ )_n Lamellae.

ABSTRACT: The possibility to engineer (GeTe)_m (Sb₂ Te₃ )_n phase-change materials to co-host ferroelectricity is extremely attractive. The combination of these functionalities holds great technological impact, potentially enabling the design of novel multifunctional devices. Here an experimental and theoretical study of epitaxial (GeTe)_m (Sb₂ Te₃ )_n with GeTe-rich composition is presented. These layered films feature a tunable distribution of (GeTe)_m (Sb₂ Te₃ )₁ blocks of different sizes. Breakthrough evidence of ferroelectric displacement in thick (GeTe)_m (Sb₂ Te₃ )₁ lamellae is provided. The density functional theory calculat

SUBMITTER: Cecchi S 

PROVIDER: S-EPMC10767439 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature