Tuesday publication post 📖 This newest publication comes from the #TUDUniversityofTechnologyDresden from authors Darius Pohl and Bernd Rellinghaus! The authors have looked at topologically protected spin textures using the #FusionAX system. These spin textures, such as skyrmions and antiskyrmions, introduce emergent magnetic fields that can contribute to the topological Hall effect (THE). However, to unequivocally identify THE, it’s critical to separate it from the anomalous Hall effect (AHE).
To tackle this challenge, novel in situ measurement were employed, combining:
🔍 High-resolution Lorentz transmission electron microscopy (LTEM) to directly image magnetic textures under an external magnetic field.
⚡ Concurrent Hall voltage measurements on the same specimen, ensuring direct correlation with the underlying spin configurations.
Using this approach, the authors examined the chiral soliton lattice and antiskyrmions in Mn₁.₄PtSn and uncovered key findings:
✅ The observed magnetic textures fully explain the measured Hall voltage—without requiring any additional topological Hall contributions.
✅ The formation and annihilation of antiskyrmions had no impact on the Hall voltage, challenging previous interpretations of their role in transport phenomena.
This work highlights the power of correlative in situ microscopy & transport measurements in topology-driven electronic effects.
Want to read the entire paper?
Find it here!
https://www.doi.org/10.1002/smtd.202401875
