Ferroelectric Properties of Bilayer MoS₂/WS₂ Heterostructure Modulated by Twist Angle.

ABSTRACT: The emergence of sliding ferroelectricity is found in non-ferroelectric two-dimensional materials, which brings novel ferroelectric phenomena and expands the potential for advancing ferroelectric devices. Experimental studies have largely focused on sliding ferroelectricity with fixed twist angles owing to the limitations of preparation methods with controlled angles. However, how to modulate the ferroelectric properties in the sliding materials is still challenging. In this work, the out-of-plane ferroelectric properties of typical bilayer MoS₂/WS₂ heterostructure are reported by precisely controlling twist angles. The experimental results demonstrate that the second-harmonic generation response, indicative of symmetry breaking, decreases as the twist angle increases

SUBMITTER: Wang L 

PROVIDER: S-EPMC12752589 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature