Double exchange interaction in Mn-based topological kagome ferrimagnet
Recently discovered Mn-based kagome materials, such as RMn<sub>6</sub>Sn<sub>6</sub> (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 GdMn<sub>6</sub>Sn<sub>6</sub> 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- <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>p</mml:mi></mml:math> and Mn- <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>d</mml:mi></mml:math> 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.
Authors
- Victor Nikolaevich Antonov (ORCID: https://orcid.org/0000-0003-3410-1582)
- A. Ernst (ORCID: https://orcid.org/0000-0003-4005-6781)
- De-Yang Wang (ORCID: https://orcid.org/0009-0008-6289-3920)
- Jiameng Wang (ORCID: https://orcid.org/0000-0003-2649-4996)
- Shan Qiao (ORCID: https://orcid.org/0000-0003-3816-3414)
- Mao Ye (ORCID: https://orcid.org/0000-0002-3298-4724)
- Fangyuan Zhu (ORCID: https://orcid.org/0009-0005-1290-1038)
- Jiefeng Cao
- Haoji Qian
- Qi Jiang (ORCID: https://orcid.org/0009-0007-9498-5873)
Institutions
- Johannes Kepler University of Linz (AT)
- Xidian University (CN)
- ShanghaiTech University (CN)
- Max Planck Institute of Microstructure Physics (DE)
- G.V. Kurdyumov Institute for Metal Physics (UA)
- Shanghai Advanced Research Institute (CN)
- Shanghai Institute of Applied Physics (CN)
- Shanghai Institute of Microsystem and Information Technology (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Communications Physics
- Published
- 2024-10-26
- DOI
- https://doi.org/10.1038/s42005-024-01838-9
- Citations
- 6
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- National Science Foundation
- Salt Science Research Foundation
- National Natural Science Foundation of China
- Austrian Science Fund
- Science and Technology Commission of Shanghai Municipality
- National Key Research and Development Program of China