磁性
物理
偶极子
凝聚态物理
极性(国际关系)
反铁电性
订单(交换)
铁电性
压电
量子力学
财务
电介质
经济
生物
遗传学
细胞
声学
作者
Ling-Fang Lin,Yang Zhang,Adriana Moreo,Elbio Dagotto,Shuai Dong
标识
DOI:10.1103/physrevlett.123.067601
摘要
Within Landau theory, magnetism and polarity are homotopic, displaying a one-to-one correspondence between most physical characteristics. However, despite widely reported noncollinear magnetism, spontaneous noncollinear electric dipole order as ground state is rare. Here a dioxydihalides family is predicted to display noncollinear ferrielectricity, induced by competing ferroelectric and antiferroelectric soft modes. This intrinsic noncollinearity of dipoles generates unique physical properties, such as $\mathbb{Z}_2\times\mathbb{Z}_2$ topological domains, atomic-scale dipole vortices, and negative piezoelectricity.
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