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首页> 外文期刊>Bulletin of the American Physical Society >APS -2017 Annual Meeting of the APS Mid-Atlantic Section- Event - Topological Vortex Domains in Quantum Materials
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APS -2017 Annual Meeting of the APS Mid-Atlantic Section- Event - Topological Vortex Domains in Quantum Materials

机译：APS -2017年APS大西洋中部分会年会-事件-量子材料中的拓扑涡旋域

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Engineering of domains and domain walls is quintessential for technological exploitation of numerous functional materials. However, it has only recently realized that the configuration of these domains/domain walls can have non-trivial topology. We will discuss a new topological classification scheme of domain/domain boundary configurations with Ising-type or two-dimensional order parameters: $Z_{m}$exttimes $Z_{n}$ domains ($m$ directional variants and $n$ translational antiphases) and Z$_{l}$ vortices (where $l$ number of domains and that of domain boundaries merge). This classification, with the concept of topological protection and topological charge conservation, has been applied to a wide range of materials such as (hybrid) improper ferroelectrics, chiral ferromagnets, and magnetic superconductors. We will also discuss the emergent physical properties at domain walls, distinct from those of domains. The presented topological consideration provides a basis in understanding the formation, kinetics, manipulation and property optimization of domains/domain walls in quantum materials.
机译：畴和畴壁的工程对于众多功能材料的技术开发至关重要。然而，直到最近才意识到这些域/域壁的配置可以具有非平凡的拓扑。我们将讨论具有Ising类型或二维顺序参数的域/域边界配置的新拓扑分类方案：$ Z_ {m} $ exttimes $ Z_ {n} $域（$ m $定向变体和$ n $平移反相和Z $ _ {l} $涡旋（其中$ l $个域的数量和域边界的数量合并）。这种具有拓扑保护和拓扑电荷守恒概念的分类已被广泛应用于各种材料，例如（混合）不当铁电体，手性铁磁体和磁性超导体。我们还将讨论与畴不同的畴壁处出现的物理特性。提出的拓扑考虑因素为理解量子材料中畴/畴壁的形成，动力学，操纵和性能优化提供了基础。

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