Multer, DanielYin, Jia-XinHossain, Md ShafayatYang, XianSales, Brian C.Miao, HuMeier, William R.Jiang, Yu-XiaoXie, YaofengDai, PengchengLiu, JianpengDeng, HanbinLei, HechangLian, BiaoZahid Hasan, M.2023-03-102023-03-102023Multer, Daniel, Yin, Jia-Xin, Hossain, Md Shafayat, et al.. "Imaging real-space flat band localization in kagome magnet FeSn." <i>Communications Materials,</i> 4, (2023) Springer Nature: https://doi.org/10.1038/s43246-022-00328-1.https://hdl.handle.net/1911/114516Kagome lattices host flat bands due to their frustrated lattice geometry, which leads to destructive quantum interference of electron wave functions. Here, we report imaging of the kagome flat band localization in real-space using scanning tunneling microscopy. We identify both the Fe3Sn kagome lattice layer and the Sn2 honeycomb layer with atomic resolution in kagome antiferromagnet FeSn. On the Fe3Sn lattice, at the flat band energy determined by the angle resolved photoemission spectroscopy, tunneling spectroscopy detects an unusual state localized uniquely at the Fe kagome lattice network. We further show that the vectorial in-plane magnetic field manipulates the spatial anisotropy of the localization state within each kagome unit cell. Our results are consistent with the real-space flat band localization in the magnetic kagome lattice. We further discuss the magnetic tuning of flat band localization under the spin–orbit coupled magnetic kagome lattice model.engThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.Journal articles43246-022-00328-1https://doi.org/10.1038/s43246-022-00328-1