极地磁铁中的奇特旋转刺激 VOSe_{2}O_{5}
Tomonao Araki1, Rina Takagi1,2, Takashi Kurumaji3
1Department of Applied Physics and Institute of Engineering Innovation, <a href="https://ror.org/057zh3y96">University of Tokyo</a>, Tokyo 113-8656, Japan.
Physical review letters
|October 11, 2024
概括
研究人员研究了极磁体VOSe_{2}O_{5}中的磁共振动力学,在各种磁相中识别出不同的旋转激发模式,如 skyrmion 格子 (SkL). 这项工作澄清了极磁体中的旋转动力学,并突出了新型旋转激发的VOSe_{2}O_{5}.
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:
- 极磁体表现出复杂的磁相,包括 skyrmion 格子 (SkL),这对基础研究和潜在应用具有重大兴趣.
- 了解这些材料中自旋激发的动力学对于描述它们的磁性和探索新奇现象至关重要.
研究的目的:
- 为了研究极磁铁的磁共振动力学 VOSe_{2}O_{5}.
- 识别和描述不同磁相中的旋转激发模式,包括Néel型 skyrmion网格 (SkL).
- 通过与微磁模拟进行比较,阐明旋转振荡机制.
主要方法:
- 在VOSe_{2}O_{5}中使用振荡磁场对晶体学c轴平行 (B_{ν}c) 和垂直 (B_{ν}c) 进行磁共振动态的实验研究.
- 微磁模拟以复制观察到的激发模式,选择规则和相对共振频率.
- 分析各种磁相中的自旋激发模式,包括环状,SkL,IC-2和一个新的B'相.
主要成果:
- 在循环环和SkL旋转状态中,确定了两个对B_{ν}c活跃的激发模式和一个对B_{ν}c活跃的模式.
- 微磁模拟成功地重现了实验选择规则和频率,使得自旋振荡方式的明确分配成为可能.
- IC-2阶段表现出类似于SkL状态的激发模式,并且发现了一个新的B'阶段,其中有四种模式对B_{ν}c活跃.
结论:
- 该研究提供了对极磁体共振旋转动态的基本理解.
- VOSe_{2}O_{5}被确立为一个独特的材料平台,可容纳丰富多样的非碎的旋转刺激.
- 这些发现有助于全面描述极地材料中复杂的磁现象.
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