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Non-volatile electrical polarization switching via domain wall release in 3R-MoS₂ bilayer.

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 MoS₂ 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.

SUBMITTER: Yang D

PROVIDER: S-EPMC10869714 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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Non-volatile electrical polarization switching via domain wall release in 3R-MoS2 bilayer.

Yang Dongyang D Liang Jing J Wu Jingda J Xiao Yunhuan Y Dadap Jerry I JI Watanabe Kenji K Taniguchi Takashi T Ye Ziliang Z

Nature communications 20240215 1

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 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 switch ...[more]

PMID: 38360848

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