论文标题
在多晶Ermno3中，限制驱动的逆域缩放率
Confinement-driven inverse domain scaling in polycrystalline ErMnO3
论文作者
论文摘要
铁电材料中关于拓扑现象的研究彻底改变了我们理解极地顺序的方式。有趣的例子是极地天际，涡流/抗涡流结构和铁电不受限制的，它们促进了从电场可控制的手性到负电容效应的新兴物理特性。在这里，我们研究了受拓扑保护的涡流对不当的铁电ERMNO3多晶体中域形成的影响，与经典的铁电电相比，表明倒立的域缩放行为。我们观察到，随着晶粒尺寸的增加，形成了较小的结构域，这与拓扑涡流与局部应变场的相互作用有关。域缩放行为的反转具有深远的含义，从根本上为基于拓扑的域工程提供了新的机会，并调整了铁电的机电和介电性能。
The research on topological phenomena in ferroelectric materials has revolutionized the way we understand polar order. Intriguing examples are polar skyrmions, vortex/anti-vortex structures and ferroelectric incommensurabilties, which promote emergent physical properties ranging from electric-field-controllable chirality to negative capacitance effects. Here, we study the impact of topologically protected vortices on the domain formation in improper ferroelectric ErMnO3 polycrystals, demonstrating inverted domain scaling behavior compared to classical ferroelectrics. We observe that as the grain size increases, smaller domains are formed, which we relate to the interaction of the topological vortices with local strain fields. The inversion of the domain scaling behavior has far-reaching implications, providing fundamentally new opportunities for topology-based domain engineering and the tuning of the electromechanical and dielectric performance of ferroelectrics in general.
