Detection of skyrmion phases in spintronic materials using neutron scattering

在目前的项目中，我们计划在大块和单晶薄膜中识别和表征新型自旋电子材料中的skyrmion相。该项目的主要目标是通过磁相图对这些材料进行广泛的表征，以指导寻找最有希望用于原型设备的化合物。我们的主要重点将放在具有低于立方对称性的化合物上，如四边形Heusler合金，三角形Co山质岩，或薄膜，其中额外的各向异性是由样品几何结构引入的。这一方面有助于解开交换参数和Dzyaloshinskii-Moriya相互作用，以及晶体各向异性和表面或界面效应在体系微观磁哈密顿量中的作用。我们还将研究存在反铁磁天空粒子的候选者，它们到目前为止还没有被唯一地识别出来。

In the present project we plan to identify and characterize skyrmion phases in novel spintronic materials both in the bulk and in single-crystalline thin films. The primary goal of the project is to provide extensive characterization of such materials across their magnetic phase diagrams to guide the search for the most promising compounds to be used in prototype devices. Our main focus will be on compounds with lower-than-cubic symmetry, such as tetragonal Heusler allows, trigonal Co shandites, or thin films, in which additional anisotropy is introduced by the sample geometry. This should help to disentangle the roles of exchange parameters and Dzyaloshinskii-Moriya interactions on the one hand, and crystalline anisotropies and surface or interface effects on the other hand in the microscopic magnetic Hamiltonian of the system. We will also look at candidates for hosting antiferromagnetic skyrmions, which until now have not been uniquely identified.