Magnetic skyrmions are topologically protected whirling spin textures that can be stabilized in magnetic materials by an asymmetric exchange interaction between neighbouring spins that imposes a fixed chirality. Their small size, together with the robustness against external perturbations, make magnetic skyrmions potential storage bits in a novel generation of memory and logic devices. To this aim, their contribution to the electrical transport properties of a device must be characterized—however, the existing demonstrations are limited to low temperatures and mainly in magnetic materials with a B20 crystal structure. Here we combine concomitant magnetic force microscopy and Hall resistivity measurements to demonstrate the electrical detection of sub-100 nm skyrmions in a multilayered thin film at room temperature. Furthermore, we detect and analyse the Hall signal of a single skyrmion, which indicates that it arises from the anomalous Hall effect with a negligible contribution from the topological Hall effect.

磁性天rm是在拓扑上受保护的旋转自旋纹理，可以通过施加固定手性的相邻自旋之间的不对称交换相互作用来稳定磁性材料中的旋转自旋纹理。它们的小尺寸以及对外部干扰的鲁棒性，使磁天文成为了新一代存储器和逻辑器件中的潜在存储位。为此，必须表征它们对设备电传输性能的贡献，但是，现有的演示仅限于低温，并且主要是在具有B20晶体结构的磁性材料中进行的。在这里，我们将伴随的磁力显微镜和霍尔电阻率测量结合起来，以证明在室温下多层薄膜中低于100 nm的天空离子的电学检测。此外，