论文标题

湿滑的副透明金属二甲基化元素双层

Slippery paraelectric transition metal dichalcogenide bilayers

论文作者

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

论文摘要

传统的铁电体经历了热诱导的相变,它们的结构对称性增加。相关的高对称结构被称为{\ em Paraelectric}。最近已经证明铁电过渡金属二甲甲基双层是羟基晶状体,但对这种阶段的原子构型的说法不多。正如这里包括包括分子动力学在内的数值计算所发现的那样,它们的排水性只能归因于具有相反固有极化的铁电相的时间平均值,其切换需要宏观的大面积才能在一定的一定范围内滑落。

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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