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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 MoS2 with a natural rhombohedral stacking, where the spontaneous polarization is coupled with excitonic effects through an 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.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Sliding ferroelectricity, bilayer MoS2, polarization switching

Date published: 2024-02-15

Publisher: Springer Science and Business Media LLC

Journal:

• Nature Communications (ISSN: 20411723) vol. 15 issue. 1 1389

Funding:

• Canada First Research Excellence Fund
• Canada Foundation for Innovation
• Canada First Research Excellence Fund
• Gordon and Betty Moore Foundation Grant GBMF11071
• Canada Foundation for Innovation
• Canada First Research Excellence Fund
• Gordon and Betty Moore Foundation Grant GBMF11071
• Canada Foundation for Innovation
• Gordon and Betty Moore Foundation Grant GBMF11071
• Canada Foundation for Innovation
• Canada First Research Excellence Fund
• Gordon and Betty Moore Foundation Grant GBMF11071
• Canada Foundation for Innovation
• Canada First Research Excellence Fund
• Gordon and Betty Moore Foundation Grant GBMF11071

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1038/s41467-024-45709-x

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Updated at: 2025-02-08 12:30:20 +0900

Published on MDR: 2025-02-08 12:30:20 +0900