All electrically manipulated ferrimagnetic skyrmions: creation, dynamic study and detection

在计划中的项目中，将研究磁性3D过渡金属和稀土薄膜异质结构中的Skyrmions。亚铁磁性层系或合金可以在一定的温度和成分范围内形成亚铁磁性天子体，这些天子体在磁化补偿点和角动量补偿点都是稳定的。在补偿点，所谓的天米子霍尔角接近于零。在这个项目中，我们将用洛伦兹透射电子显微镜研究亚铁磁性薄膜系统和合金的相图，以优化溅射沉积产生的薄膜。然后，将在合适的纳米结构中研究Skyrmions的形成和操纵，包括静态和时间分辨。最后，利用隧道磁阻实现了对天米子的电学探测，并演示了天米子跑道样机。

In the planned project, skyrmions in thin-film heterostructures of magnetic 3d-transition metals and rare earths will be investigated. Ferrimagnetic layer systems or alloys can form ferrimagnetic skyrmions in a certain temperature and composition range, which are also stable at the compensation point of the magnetization as well as at the compensation point of the angular momentum. At the compensation point, the so-called Skyrmion Hall angle, which is a measure of the lateral deflection of the Skyrmions under the influence of a force, approaches zero.In this project, the phase diagram of ferrimagnetic layer systems and alloys will be investigated by Lorentz transmission electron microscopy in order to optimize the layers produced by sputter deposition. Then the formation and manipulation of skyrmions will be investigated in suitable nanostructures, both statically and time-resolved. Finally, the electrical detection of skyrmions using the tunnel magnetoresistance will be realized in a skyrmion racetrack and a skyrmion racetrack prototype will be demonstrated.