论文标题
缺陷引起的$ 4P $ - 磁性二型白金
Defect-induced $4p$-magnetism in layered platinum diselenide
论文作者
论文摘要
杜地铂（PTSE $ _ {2} $）是最近发现的外部磁铁，其磁性归因于Pt-vaccancies的存在。这些缺陷本身的宿主材料显示出有趣的结构和电子特性，其中一些源于其层之间异常强的相互作用。迄今为止，尚不清楚PTSE $ _2 $的唯一内在属性将如何影响其诱导的磁性。在这项理论工作中，我们表明PTSE $ _ {2} $薄膜中缺陷诱导的磁性对：（i）层厚度（ii）缺陷密度和（iii）底物选择。这些不同的因素会大大改变所有磁性特性，包括局部力矩的大小，耦合的强度，甚至矩之间的耦合性质。我们进一步表明，强大的层间相互作用是理解这些影响的关键。更好地理解对磁性的各种影响，可以在基于PT的二核苷中对磁性的可控调整，这些磁性特性可用于设计用于磁电和磁化应用的新型设备。
Platinum diselenide (PtSe$_{2}$) is a recently-discovered extrinsic magnet, with its magnetism attributed to the presence of Pt-vacancies. The host material to these defects itself displays interesting structural and electronic properties, some of which stem from an unusually strong interaction between its layers. To date, it is not clear how the unique intrinsic properties of PtSe$_2$ will affect its induced magnetism. In this theoretical work, we show that the defect-induced magnetism in PtSe$_{2}$ thin films is highly sensitive to: (i) the layer-thickness (ii) defect density, and (iii) substrate choice. These different factors dramatically modify all magnetic properties, including the magnitude of local moments, strength of the coupling, and even nature of the coupling between the moments. We further show that the strong inter-layer interactions are key to understanding these effects. A better understanding of the various influences on magnetism, can enable controllable tuning of the magnetic properties in Pt-based dichalcogenides, which can be used to design novel devices for magnetoelectric and magneto-optic applications.
