Double exchange interaction in Mn-based topological kagome ferrimagnet

IF 5.4 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Communications Physics Pub Date : 2024-10-26 DOI:10.1038/s42005-024-01838-9

Jiameng Wang, Arthur Ernst, Victor N. Antonov, Qi Jiang, Haoji Qian, Deyang Wang, Jiefeng Cao, Fangyuan Zhu, Shan Qiao, Mao Ye

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引用次数: 0

Abstract

Recently discovered Mn-based kagome materials, such as RMn6Sn6 (R = rare-earth element), exhibit the coexistence of topological electronic states and long-range magnetic order, offering a platform for studying quantum phenomena. However, understanding the electronic and magnetic properties of these materials remains incomplete. Here, we investigate the electronic structure and magnetic properties of GdMn6Sn6 using x-ray magnetic circular dichroism, photoemission spectroscopy, and theoretical calculations. We observe localized electronic states from spin frustration in the Mn-based kagome lattice and induced magnetic moments in the nonmagnetic element Sn experimentally, which originate from the Sn- $$p$$ and Mn- $$d$$ orbital hybridization. Our calculations also reveal ferromagnetic coupling within the kagome Mn-Mn layer, driven by double exchange interaction. This work provides insights into the mechanisms of magnetic interaction and magnetic tuning in the exploration of topological quantum materials. Mn-based kagome materials like RMn6Sn6 (R = rare-earth element) exhibit topological states and long-range magnetic order. This work demonstrates the ferrimagnetic structure in GdMn6Sn6, revealing induced magnetic moments in nonmagnetic Sn, and Mn-Mn double exchange interaction mediated by Sn atoms.

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锰基拓扑卡戈梅铁磁体中的双交换相互作用。

最近发现的锰基卡戈米材料，如 RMn6Sn6（R = 稀土元素），表现出拓扑电子态与长程磁序共存的特性，为研究量子现象提供了一个平台。然而，对这些材料的电子和磁性能的了解仍不全面。在这里，我们利用 X 射线磁圆二色性、光发射光谱和理论计算研究了 GdMn6Sn6 的电子结构和磁性能。我们通过实验观察到锰基卡戈米晶格中自旋挫折产生的局部电子态，以及非磁性元素 Sn 中的诱导磁矩，这些磁矩来自 Sn- p 和 Mn- d 轨道杂化。我们的计算还揭示了卡戈米锰锰层内由双交换相互作用驱动的铁磁耦合。这项工作为探索拓扑量子材料中的磁相互作用和磁调谐机制提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Communications Physics Physics and Astronomy-General Physics and Astronomy

CiteScore

8.40

自引率

3.60%

发文量

276

审稿时长

13 weeks

期刊介绍： Communications Physics is an open access journal from Nature Research publishing high-quality research, reviews and commentary in all areas of the physical sciences. Research papers published by the journal represent significant advances bringing new insight to a specialized area of research in physics. We also aim to provide a community forum for issues of importance to all physicists, regardless of sub-discipline. The scope of the journal covers all areas of experimental, applied, fundamental, and interdisciplinary physical sciences. Primary research published in Communications Physics includes novel experimental results, new techniques or computational methods that may influence the work of others in the sub-discipline. We also consider submissions from adjacent research fields where the central advance of the study is of interest to physicists, for example material sciences, physical chemistry and technologies.