论文标题
成像kagome磁铁FESN中的真实空间平面频带定位
Imaging real-space flat band localization in kagome magnet FeSn
论文作者
论文摘要
Kagome Lattices由于其沮丧的晶格几何形状而容纳扁平带，从而导致电子波函数的破坏性量子干扰。在这里，我们报告使用扫描隧道显微镜在真实空间中的Kagome平面频带定位进行成像。我们识别Fe3SN Kagome晶格层和SN2蜂窝层在Kagome Antomic antomic分辨率中均具有kagome抗fiferromagnet fesn的分辨率。在FE3SN晶格上，在由角度分辨光发射光谱确定的平坦带能量下，隧道光谱检测到在Fe Kagome晶格网络上独特地定位的异常状态。我们进一步表明，矢量内磁场操纵每个kagome单位单元内定位状态的空间各向异性。我们的结果与磁性kagome晶格中的真实空间平坦带定位一致。我们进一步讨论了在自旋轨道耦合磁量晶状体模型下平面带定位的磁调节。
Kagome 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.
