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Deformation-Assisted Skyrmion Formation and Reorganization under Pulsed Currents.
Guanghui Han1, Wenkun Zhao1,2, Shaohua Fan3,4
1School of Materials Science and Engineering, Peking University, Beijing 100871, China.
ACS Nano
|June 19, 2026
Summary
Electric current pulses deform helical stripes into topological skyrmions, creating skyrmion lattices in Co8Zn10Mn2 at room temperature. This deformation-assisted dynamics offers a new route for skyrmion generation and organization in spintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Topological skyrmions are crucial for nonvolatile magnetic memory and spintronic devices.
- Understanding current-induced skyrmion dynamics is vital for device functionality.
Purpose of the Study:
- To investigate how electrical current pulses reshape skyrmions and their collective order.
- To explore the mechanisms of stripe-to-skyrmion conversion and skyrmion lattice formation.
Main Methods:
- Experimental observation of current-induced magnetic textures in Co8Zn10Mn2 at room temperature.
- Utilizing pulsed electric currents to drive skyrmion dynamics.
- Employing micromagnetic simulations to validate observed phenomena.
Main Results:
- Electric current pulses induce deformation of helical stripes, leading to skyrmion lattice formation.
- Observed intermediate textures include elongated and comet-like skyrmions, indicating nonuniform deformation.
- Pulsed currents drive skyrmion cluster reorganization, leading to a reordered skyrmion assembly.
Conclusions:
- Deformation-assisted dynamics provide a real-space mechanism for pulsed current-induced skyrmion generation and reorganization.
- Pulsed currents link pinning-mediated deformation to the emergence and evolution of skyrmion order.
- This study offers insights into controlling skyrmion behavior for advanced spintronic applications.
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