论文标题
过渡金属邻苯胺单层作为新的Chern绝缘子
Transition-metal phthalocyanine monolayers as new Chern insulators
论文作者
论文摘要
为了探索用于实现量子异常效应（QAHE）的新材料，我们研究了正方形晶格中过渡金属苯甲酸（TMPC）单层的电子，磁性和拓扑特性。他们中的许多人具有较大的拓扑非平凡的带隙和整数Chern数字。特别是，MOPC的费米水平就位于带隙（例如= 8.1 MeV）中，并且具有较大的磁各向异性能量（MAE = 2.0 MeV / mo原子）和16 K的Curie温度，显示其对应用的有用性。在MOPC纳米替比中，拓扑保护的边缘状态的存在进一步证实了它是一种新的二维拓扑绝缘子。这大大扩展了Qahe材料以设计量子设备的搜索。
To explore new materials for the realization of the quantum anomalous Hall effect (QAHE), we studied electronic, magnetic and topological properties of transition-metal phthalocyanine (TMPc) monolayers in a square lattice. Many of them have large topologically nontrivial band gaps and integer Chern numbers. In particular, the Fermi level of MoPc lies right in the band gap (Eg=8.1 meV) and has large magnetic anisotropy energy (MAE=2.0 meV per Mo atom) and a Curie temperature of 16 K, showing its usefulness for applications. The presence of topologically protected edge state in a MoPc nanoribbon further confirms it as a new two-dimensional topological insulator. This much widens the search of QAHE materials for the design of quantum devices.
