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Sliding ferroelectricity in a bulk misfit layer compound (PbS)_(1.18)VS₂

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arxiv 2306.14446 v1 pith:RZ5JXBP4 submitted 2023-06-26 cond-mat.mtrl-sci cond-mat.mes-hall

Sliding ferroelectricity in a bulk misfit layer compound (PbS)_(1.18)VS₂

Cinthia Antunes Corr\^ea , Ji\v{r}\'i Voln\'y , Kate\v{r}ina Tetalov\'a , Kl\'ara Uhl\'i\v{r}ov\'a , V\'aclav Pet\v{r}\'i\v{c}ek , Martin Vondr\'a\v{c}ek , Jan Honolka , Tim Verhagen This is my paper
classification cond-mat.mtrl-sci cond-mat.mes-hall
keywords crystalscompoundferroelectricitylayermetalmicroscopymisfitmoir
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Twisted heterostructures of two-dimensional crystals can create a moir\'{e} landscape, which can change the properties of it's parent crystals. However, the reproducibility of manual stacking is far from perfect. Here, the alternated stacking of post-transition metal monochalcogenides and transition metal dichalcogenides in misfit layer compound crystals is used as a moir\'{e} generator. Using X-ray diffraction, the presence of twins with a well-defined small twist angle between them is shown. Due to the twist, the surface electrical potential from the induced ferroelectricity is observed using scanning probe microscopy and electron microscopy.

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