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Updated: Sep 12, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

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Published on: June 9, 2023

在MnPS₃中具有很大的热霍尔效应

Mohamed Nawwar¹, Robin R Neumann^2,3, Jiamin Wen¹

¹Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, United States of America.

Reports on progress in physics. Physical Society (Great Britain)

|August 7, 2025

概括

这项研究研究了MnPS3中的热霍尔效应 (THE),揭示了一个意想不到的大热霍尔角度. 这些发现突显了旋转-失败过渡的意义,并表明了当前关于磁声合理论的局限性.

科学领域:

凝聚物质物理学凝聚物质物理学
固态物理固态物理
材料科学材料科学材料科学

背景情况:

热霍尔效应 (THE) 可以来自磁子,声子或磁子-极子相互作用.
在Fe2Mo3O8中观察到的磁极子霍尔效应,表现出显著的大热霍尔信号.
作为一种绝缘抗铁磁体的 MnPS3,表现出旋转转和强大的磁弹性合,因此非常适合研究旋转格合对 THE 的效应.

研究的目的:

为了研究MnPS3中的热霍尔效应,重点关注其旋转转过渡的影响.
分析MnPS3中大型热霍尔信号的起源及其与自旋格子合的关系.
评估当前理论模型在解释MnPS3.3中观察到的THE方面的充分性.

主要方法:

在MnPS3中实验测量热霍尔效应,低至4K.
分析材料的磁性和热性质,特别是在旋转转过渡过程中.
实验结果与理论计算的比较,基于马格诺-波拉龙贝里曲率.

主要成果:

在MnPS3中观察到一个异常大的热霍尔角度,持续到4K.
标准的理论计算无法重现实验中的THE,这表明需要改进的模型.
旋转失败过渡被确定为影响MnPS3.3热性质的关键因素.

结论:

该研究表明,自旋晶格合在MnPS3.3的热霍尔效应中起着重要作用.
目前的理论还不能完全捕捉出对所观察到的THE负责的复杂的磁声声互动.
需要进一步的理论发展,以了解横向热传输中的磁声声合和散射.

关键词:

在 MnPS3 MnPS3 玛格南极子子极子极子热的霍尔效应是一个热的霍尔效应.

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