Non-volatile electrical polarization switching via domain wall release in 3R-MoS<sub>2</sub> bilayer.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 38360848.
- Also identified by DOI 10.1038/s41467-024-45709-x and PMC identifier 10869714.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Understanding the nature of sliding ferroelectricity is of fundamental importance for the discovery and application of two-dimensional ferroelectric materials. In this work, we investigate the phenomenon of switchable polarization in a bilayer MoS<sub>2</sub> with natural rhombohedral stacking, where the spontaneous polarization is coupled with excitonic effects through asymmetric interlayer coupling. Using optical spectroscopy and imaging techniques, we observe how a released domain wall switches the polarization of a large single domain. Our results highlight the importance of domain walls in the polarization switching of non-twisted rhombohedral transition metal dichalcogenides and open new opportunities for the non-volatile control of their optical response.