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Updated: Jul 8, 2026
10:36
Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
Published on: January 21, 2016
Anisotropic Magnetoresistance and Giant Topological Hall Effect in In-Plane Topological Spin Structures
Hongshu Li1, Yi Yang1, Keyi Jiang2
1Department of Physics, Engineering Research Center for Micro-Nano Optoelectronic Materials and Devices, Ministry of Education, Xiamen University, Xiamen 361005, P. R. China.
Nano Letters
|July 6, 2026
Summary
This study explores topological spin textures in in-plane magnetized systems, revealing distinct anisotropic spin transport in FeCo/W heterostructures. Researchers achieved efficient detection of these textures via Hall effect measurements, observing a giant topological Hall resistivity.
Area of Science:
- Condensed matter physics
- Materials science
- Spintronics
Background:
- Topologically protected spin textures are crucial for spintronics.
- Research has focused on perpendicular magnetization, leaving in-plane systems underexplored.
- Understanding in-plane topological spin structures is essential for advancing spintronic devices.
Purpose of the Study:
- To investigate spin configurations and transport in FeCo-based systems with engineered thickness and interfaces.
- To explore the formation and properties of topological spin structures in in-plane magnetized materials.
- To enable efficient detection of in-plane topological spin textures through transport characterizations.
Main Methods:
- Systematic investigation of FeCo single layers and FeCo/W heterostructures.
- Combined thickness and interface engineering.
- Angular-dependent analysis of Hall signals to differentiate Hall effects.
Main Results:
- Formation of cross-tie domain walls in FeCo single layers.
- Emergence of meron chains in FeCo/W heterostructures with anisotropic spin transport.
- Achieved a giant topological Hall resistivity of ~0.24 μΩ·cm at room temperature.
Conclusions:
- Clarified complex transport characteristics in topologically nontrivial in-plane magnets.
- Demonstrated efficient detection of in-plane topological spin textures using Hall effect measurements.
- Opened new avenues for exploring magnetotransport phenomena in condensed matter systems.
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