Spin disorder control of topological spin texture

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Stabilizing topological spin textures in layered magnets is crucial for developing advanced low-dimensional spintronics.
• Manipulating complex spin textures beyond simple skyrmions in 2D magnets presents significant challenges.

Purpose of the Study:

• To investigate the effect of introducing magnetic iron atoms into the van der Waals gap of Fe3GaTe2.
• To achieve reliable and flexible manipulation of topological spin textures in a 2D magnet system.
• To realize non-trivial topological solitons at room temperature.

Main Methods:

• Introduction of magnetic iron atoms into the van der Waals gap of Fe3GaTe2.
• Modification of local anisotropic magnetic interactions.
• Direct observation of spin texture transitions and soliton formation.

Main Results:

• Demonstrated the introduction of iron atoms to modify magnetic interactions in Fe3GaTe2.
• Observed a direct transition between ordered and disordered skyrmion lattices.
• Achieved room-temperature realization of non-trivial topological solitons, including skyrmioniums and skyrmion bags.

Conclusions:

• The strategic introduction of magnetic atoms can effectively control topological spin textures in layered magnets.
• Random spin control via atom insertion offers a pathway to realizing diverse non-trivial topological spin textures.
• This work paves the way for novel spintronics devices utilizing complex magnetic solitons.