局部拓结构在封闭的性介质中的对相互作用
I M Tambovtsev1,2,3, I S Lobanov1, Alexei D Kiselev4
1Faculty of Physics, ITMO University, 197101 St. Petersburg, Russia.
Physical review. E
|September 19, 2023
概括
我们研究了磁性和液晶系统中拓结构之间的相互作用. 斯基尔米翁和托龙在很远的距离上相互吸引,而吸血虫则表现出取决于方向的相互作用,所有结构都表现出短距离的排斥.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 局部拓结构,如 skyrmions,torons 和 leeches,是奇拉磁性和胆固醇液晶 (CLC) 系统的关键特征.
- 了解这些结构之间的配对相互作用对于它们在先进材料和设备中的应用至关重要.
研究的目的:
- 研究在性磁性和CLC系统中的各种局部拓结构之间的有效的互动潜力.
- 分析这些相互作用的距离和方向依赖性.
主要方法:
- 利用磁系统的格子模型,结合散体和表面异质,交换和Dzyaloshinskii-Moriya相互作用.
- 在特定的场和边界条件下,应用数值分析来研究CLC细胞中的相互作用潜力.
- 专注于一个相图区域,在一个z-圆基本状态中共存斯基米翁管,托龙和吸血虫.
主要成果:
- 斯基尔米安-斯基尔米安和托伦-托伦潜能在很大距离上具有吸引力,并且在很大程度上独立于轴向不对称.
- 李奇与李奇的相互作用是取决于方向的,在某些方向上的长距离可能会产生排斥.
- 所有相互作用潜能都表现出短距离的排斥力,并具有与平衡分离相对应的局部最小值.
- 在较短的距离上,Skyrmion-skyrmion潜力显示出额外的转移稳定配置.
结论:
- 拓结构的相互作用行为有显著的变化,与斯基米翁和托龙相比,吸血虫表现出更复杂的,取决于方向的力量.
- 这些发现提供了关于拓单元的自我组织和集体行为的见解.
- 对于设计和控制基于新型磁性和液晶技术而言,详细了解星际力量至关重要.
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