论文标题
二维材料中的高温铁磁性MNSN起源于层间耦合
High-temperature ferromagnetism in two-dimensional material MnSn originated from interlayer coupling
论文作者
论文摘要
MNSN单层合成最近是一种新型的二维铁磁材料，带有六角形晶格，其中三个Mn原子聚集在一起形成三聚体，使其与其他磁性二维材料截然不同。最令人印象深刻的是，当层数从1增加到3时，居里温度从54 K急剧升高到225 k。但是，在先前的研究中没有报道定量解释。在此中，通过第一原则计算方法和蒙特卡洛方法，我们证明了强层中层铁磁耦合是增强其临界温度的重要作用，该磁场是稳定MNSN多层人士的铁磁磁场的磁场。
MnSn monolayer synthesized recently is a novel two-dimensional ferromagnetic material with a hexagonal lattice, in which three Mn atom come together to form a trimer, making it remarkably different from other magnetic two-dimensional materials. Most impressively, there happens a sharp increase of Curie temperature from 54 K to 225 K when the number of layers increase from 1 to 3. However, no quantitative explanation is reported in previous studies. Herein, by means of first-principle calculations method and Monte carlo method, we demonstrate that strong interlayer ferromagnetic coupling is the essential role in enhancing its critical temperature, which act as a magnetic field to stabilize the ferromagnetism in the MnSn multilayers.
