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arXiv · 2209.14437

Slippery paraelectric transition metal dichalcogenide bilayers

Juan M. Marmolejo-Tejada·Joseph E. Roll·Shiva Prasad Poudel·Salvador Barraza-Lopez·Martin A. Mosquera
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Abstract

Traditional ferroelectrics undergo thermally-induced phase transitions whereby their structural symmetry increases. The associated higher-symmetry structure is dubbed {\em paraelectric}. Ferroelectric transition metal dichalcogenide bilayers have been recently shown to become paraelectric, but not much has been said of the atomistic configuration of such a phase. As discovered through numerical calculations that include molecular dynamics here, their paraelectricity can only be ascribed to a time average of ferroelectric phases with opposing intrinsic polarizations, whose switching requires macroscopically large areas to slip in unison.

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Juan M. Marmolejo-Tejada, Joseph E. Roll, Shiva Prasad Poudel, Salvador Barraza-Lopez, Martin A. Mosquera. 2022-09-28. Slippery paraelectric transition metal dichalcogenide bilayers. https://doi.org/10.1021/acs.nanolett.2c03373

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