在火板中的马格农波段与海森伯格交换和异质物
V V Jyothis1,2, Bibhabasu Patra3, V Ravi Chandra1,2
1School of Physical Sciences, National Institute of Science Education and Research Bhubaneswar, Jatni, Odisha 752050, India.
概括
这项研究研究了在火格子材料的薄膜中称为磁子的磁刺激. 研究人员分析了不同磁相和方向的磁带和表面状态,揭示了非互惠的带结构.
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
- 磁力学 磁力学 是一种
背景情况:
- 热晶格是研究磁性秩序和异构相互作用的关键结构.
- 薄膜生长的近期进展使得对火磁性材料的实验性探索成为可能.
- 了解有限系统中的磁激发对于分析拓现象至关重要.
研究的目的:
- 计算和分析石板几何体中的马格农波段,用于火格子旋转模型.
- 为了研究海森堡交换的影响,Dzyaloshinskii-Moriya相互作用,和旋转冰的异构性.
- 描述表面局部化的磁子及其在各种磁相和方向中的拓性质.
主要方法:
- 计算不同板面方向和模型参数的经典地面状态.
- 确定地面状态以上的自旋波激发 (马格农光谱).
- 对磁带结构,贝里曲率和拓电荷 (韦尔电荷/切尔恩数) 的分析.
主要成果:
- 在板块几何结构中计算铁磁和反铁磁交换的马格农分散.
- 根据板块方向确定了非互惠的马格农带结构 ([111], [100], [110]).
- 在特定磁相 (splay,AIAO) 中,表面局部化的磁子和相关的拓特征的详细描述.
结论:
- 火板中的马格农带结构表现出取决于方向的非互惠性.
- 表面局部化的磁子存在,可以与诸如韦尔电荷和切尔恩数等拓性质相关联.
- 这项研究为分析火薄膜中的磁激发提供了必要的理论框架.
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