Journal
APPLIED PHYSICS LETTERS
Volume 119, Issue 22, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0067682
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Funding
- MCIN/AEI [PGC2018099024B100]
- CSIC/MICIN [OTR02223]
- Diputacion General de Aragon, Spain [DGA-M4]
- Agencia Nacional de Promocion Cientifica y Tecnologica, Argentina [PICT 2017-0906]
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This study investigates the possibility of obtaining a metastable state with a single chiral soliton in monoaxial helimagnets by injecting spin polarized currents, and proposes a feasible protocol for experimental applications in technological study of metastable solitons.
In monoaxial helimagnets, the Dzyaloshinskii-Moriya interaction favors inhomogeneous distributions of the magnetization with chiral modulations of solitonic character. In addition to the helical magnetic state at zero field, a chiral soliton lattice can be stabilized when a magnetic field perpendicular to the chiral axis is applied. When the magnetic field is increased, the system undergoes a phase transition to the uniform state at a critical field B-c. Above B-c, a single chiral soliton comprises the lowest level excitation over the stable uniform state, surviving as a metastable configuration. How to retain a single chiral soliton metastable state has not been addressed yet. Using micromagnetic simulations, we analyze this possibility by injecting spin polarized currents and put forward a feasible protocol to obtain a state with a single chiral soliton from the chiral soliton lattice. Our proposal could be relevant in the experimental study of metastable solitons for technological applications.
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