论文标题
相关拓扑kagome抗FiferRomagnet中的多体共振
Many-body Resonance in a Correlated Topological Kagome Antiferromagnet
论文作者
论文摘要
我们使用扫描隧道显微镜/光谱（STM/S）来阐明在强相关的拓扑kagome磁铁Mn $ _3 $ sn中的原子解析的电子结构。与其宽阔的单粒子电子结构形成鲜明对比的是，我们观察到具有类似于多体昆多共振的费米水平的FANO线形状的明显共振。我们发现，这种共鸣不是源于阶梯边缘或原子杂质，而是固有的kagome晶格。此外，谐振在矢量磁场的扰动上具有鲁棒性，但随着温度的升高，信号传导强烈相互作用的物理学大大扩展。我们表明，这种共振可以理解为基于Kagome晶格Hubbard模型的几何挫败感和强相关性的结果。我们的结果表明，拓扑kagome磁铁中新兴的多体共振行为。
We use scanning tunneling microscopy/spectroscopy (STM/S) to elucidate the atomically resolved electronic structure in strongly correlated topological kagome magnet Mn$_3$Sn. In stark contrast to its broad single-particle electronic structure, we observe a pronounced resonance with a Fano line shape at the Fermi level resembling the many-body Kondo resonance. We find that this resonance does not arise from the step edges or atomic impurities, but the intrinsic kagome lattice. Moreover, the resonance is robust against the perturbation of a vector magnetic field, but broadens substantially with increasing temperature, signaling strongly interacting physics. We show that this resonance can be understood as the result of geometrical frustration and strong correlation based on the kagome lattice Hubbard model. Our results point to the emergent many-body resonance behavior in a topological kagome magnet.
