Micromagnetic simulations are used to investigate different strategies for tunnel magnetoresistance detection of the Néel skyrmion core direction and Bloch skyrmion chirality. When a Néel skyrmion passes beneath a perpendicularly magnetized dot separated by a tunnel barrier, a peak or dip in the tunnel magnetoresistance as a function of time reveals the core direction. When a Bloch skyrmion travels below a synthetic antiferromagnet, magnetized in-plane with an axis perpendicular to that of the track, the tunnel magnetoresistance as a function of time shows a peak followed by a dip, or vice versa, depending on the chirality. The results are compared with existing detection methods based on the Hall resistance.

微磁模拟用于研究 Néel skyrmion 核心方向和 Bloch skyrmion 手性的隧道磁阻检测的不同策略。当 Néel 斯格明子通过由隧道势垒分隔的垂直磁化点下方时，隧道磁阻中随时间变化的峰或谷揭示了核心方向。当布洛赫斯格明子在合成反铁磁体下方行进时，平面内磁化且轴垂直于轨道，隧道磁阻作为时间的函数显示出峰值后下降，反之亦然，这取决于手性。结果与现有的基于霍尔电阻的检测方法进行了比较。