Abstract
We report on a micromagnetic simulation study of coupled core gyrations in one-dimensional (1D) alternating vortex-antivortex (V-AV) lattices formed in connected soft-magnetic-disk arrays. In such V-AV lattices, we found fundamental standing-wave gyration modes as well as significantly enhanced gyration-signal speed, as originating from combined strong exchange and dipole interactions between the neighboring vortices and antivortices. Collective core oscillations in the V-AV networks are characterized as unique two-branch bands, band gap, and width of which are remarkably variable and controllable by externally applied perpendicular fields. The gyration propagation speed for the parallel polarization ordering is much faster (>1 km/s) than that for 1D vortex-state arrays, and variable remarkably by application of perpendicular static fields. This work provides a fundamental understanding of the coupled dynamics of topological solitons as well as an additional mechanism for fast gyration-signal propagation; moreover, it offers an efficient means of significant propagation-speed enhancement that is suitable for information carrier applications in continuous thin-film nanostrips.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
