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arXiv · 2306.14446

Sliding ferroelectricity in a bulk misfit layer compound (PbS)$_{1.18}$VS$_2$

Cinthia Antunes Corrêa·Jiří Volný·Kateřina Tetalová·Klára Uhlířová·Václav Petříček·Martin Vondráček·Jan Honolka·Tim Verhagen
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Abstract

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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Cinthia Antunes Corrêa, Jiří Volný, Kateřina Tetalová, Klára Uhlířová, Václav Petříček, Martin Vondráček, Jan Honolka, Tim Verhagen. 2023-06-26. Sliding ferroelectricity in a bulk misfit layer compound (PbS)$_{1.18}$VS$_2$. https://doi.org/10.1103/physrevlett.134.056202

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