This research paper presents systematic micromagnetic modeling of dynamic spin solitons carried by perpendicular magnetization component on a topologically preserved chiral sequence of uniform 360° in-plane domain walls with fixed boundaries in a strip. The long, narrow strip of a soft, magnetic thin film has a repeated in-plane magnetization pattern such that the local magnetization will rotate uniformly in a single chirality, either clockwise or counterclockwise, when moving along the strip in one direction at a constant speed. As spins in an excited soliton precess around its local magnetization field, the exchange interaction with the underlying chiral magnetization configuration yields a linear soliton motion with the direction determined by the handedness of precession and the underlying magnetization chirality. The local hyperbolic secant-like soliton profile holds its shape and energy when traveling without damping, continually changes its shape, and decays otherwise.
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22 April 2024
Research Article|
April 23 2024
Excitation and dynamics of spin solitons in chiral magnetization configuration
Special Collection:
Magnonics
Abir Shadman
;
Abir Shadman
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Visualization, Writing – original draft, Writing – review & editing)
Electrical and Computer Engineering, Carnegie Mellon University
, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, USA
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Jian-Gang (Jimmy) Zhu
Jian-Gang (Jimmy) Zhu
a)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Resources, Supervision, Visualization, Writing – original draft, Writing – review & editing)
Electrical and Computer Engineering, Carnegie Mellon University
, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, USA
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 124, 172404 (2024)
Article history
Received:
December 23 2023
Accepted:
April 13 2024
Citation
Abir Shadman, Jian-Gang (Jimmy) Zhu; Excitation and dynamics of spin solitons in chiral magnetization configuration. Appl. Phys. Lett. 22 April 2024; 124 (17): 172404. https://doi.org/10.1063/5.0193810
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