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Axially Bound Magnetic Skyrmions: Glueing Topological Strings Across an Interface
Kejing Ran1,2, Yizhou Liu3, Haonan Jin1,2
1School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China.
Nano Letters
|April 22, 2022
Summary
Researchers engineered novel 3D magnetic skyrmion strings by binding two materials at their interface. This attractive binding creates a repulsive twisting effect, enabling new ways to control topological magnetic states.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Topological Magnetism
Background:
- Exploring three-dimensional (3D) magnetic textures is a significant challenge in topological magnetism.
- Understanding the vertical stacking of 2D skyrmion sheets into 3D topological strings is a key research area.
- Manipulating vertical coupling offers a pathway to engineer topological states.
Purpose of the Study:
- To present a novel axially bound magnetic skyrmion string state.
- To investigate the binding of skyrmion strings across material interfaces.
- To explore the engineering of 3D topological phases in heterostructures.
Main Methods:
- Utilized quasi-tomographic resonant elastic X-ray scattering.
- Determined and compared 3D skyrmion profiles before and after interface binding.
- Investigated chiral magnet-magnetic thin film heterostructures.
Main Results:
- Demonstrated a new type of axially bound magnetic skyrmion string state.
- Observed attractive binding between skyrmion strings across an interface.
- Found that attractive binding is coupled with repulsive twisting between skyrmions.
Conclusions:
- Axially bound skyrmion strings offer a new platform for engineering 3D topological magnetic states.
- The interplay of attractive binding and repulsive twisting provides novel control mechanisms.
- This work opens new avenues in the study of topological phases in magnetic heterostructures.
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