Dynamics of chiral solitons driven by polarized currents in monoaxial helimagnets

Laliena, V. ; Bustingorry, S. ; Campo, J. (Universidad de Zaragoza)

Resumen: Chiral solitons are one dimensional localized magnetic structures that are metastable in some ferromagnetic systems with Dzyaloshinskii–Moriya interactions and/or uniaxial magnetic anisotropy. Though topological textures in general provide a very interesting playground for new spintronics phenomena, how to properly create and control single chiral solitons is still unclear. We show here that chiral solitons in monoaxial helimagnets, characterized by a uniaxial Dzyaloshinskii–Moriya interaction, can be stabilized with external magnetic fields. Once created, the soliton moves steadily in response to a polarized electric current, provided the induced spin-transfer torque has a dissipative (nonadiabatic) component. The structure of the soliton depends on the applied current density in such a way that steady motion exists only if the applied current density is lower than a critical value, beyond which the soliton is no longer stable.

Idioma: Inglés

DOI: 10.1038/s41598-020-76903-8

Año: 2020

Publicado en: Scientific Reports 10, 1 (2020), 20430 [10 pp]
ISSN: 2045-2322

Factor impacto JCR: 4.379 (2020)

Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 17 / 73 = 0.233 (2020) - Q1 - T1

Factor impacto SCIMAGO: 1.24 - Multidisciplinary (Q1)

Financiación: info:eu-repo/grantAgreement/ES/CSIC/i-COOPB20524
Financiación: info:eu-repo/grantAgreement/ES/DGA/M4
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PGC-2018-099024-B-I00-ChiMag

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)