Abstract Though the significance of magnetism in material properties has been well recognized, there are many difficulties and limitations in the identification techniques of magnetism. Noting the magnetic order of FeSe monolayer is important for understanding its superconductivity and remains mysterious, we take it as an example to demonstrate that electric measurements may be applied to identify the magnetic order, by utilizing the magnetic-electric correlation. The contrasts in scanning tunneling microscopy topography, superconducting gaps near defects and evolution of the electronic band structures under in-plane strain for different magnetic orders, are presented as strong evidence, or fingerprints, for the existence of checkerboard antiferromagnetic order in the FeSe monolayer observed in these experiments, and the Fe–Se–Fe exchange interaction is identified to be responsible for the correlation between Fe–Se (electric) bonding states and magnetic orders.

中文翻译：

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FeSe单层中棋盘反铁磁有序的磁电相关指纹图谱

摘要 尽管磁性在材料特性中的重要性已得到公认，但磁性识别技术仍存在许多困难和局限性。注意到 FeSe 单层的磁序对于理解其超导性很重要并且仍然是神秘的，我们以此为例证明可以通过利用磁电相关性来应用电测量来识别磁序。扫描隧道显微镜形貌的对比、缺陷附近的超导间隙以及不同磁阶在面内应变下电子能带结构的演变，作为强有力的证据或指纹，证明在观察到的 FeSe 单层中存在棋盘反铁磁有序在这些实验中，