Journal
PHYSICAL REVIEW B
Volume 93, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.93.174429
Keywords
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Funding
- SASPRO Programme
- People Programme (Marie Curie Actions) European Union under REA [609427, 1244/02/01]
- Slovak Academy of Sciences
- Polish National Science Centre [DEC-2012/07/E/ST3/00538]
- European Union Horizon Research and Innovation Programme under Marie Sklodowska-Curie Grant [644348]
- Poznan Supercomputing and Networking Center [209]
- Adam Mickiewicz University Foundation
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We investigate theoretically themagnetization dynamics in a skyrmion magnonic crystal. Collective excitations are studied in a chain of touching ferromagnetic nanodots in a skyrmion magnetic configuration. The determined dispersion relation of coupled skyrmions shows a periodic dependence on the wave vector, a characteristic feature of the band structure in magnonic crystals. By spatial analysis of the magnetization amplitude in the magnonic bands we identify the excited modes as breathing and clockwise gyrotropic dynamic skyrmions. Propagating with a negative and positive group velocity, respectively, these high-and low-frequency excitations can be further explored theoretically and experimentally for fundamental properties and technological applications in spintronics and magnonics.
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