We present experimental and numerical results for the dynamic response of a connected Kagome artificial spin ice. We explicitly consider the effect of the vertex magnetization configuration on the ferromagnetic resonance (FMR) mode characteristics using micromagnetic simulations. We show that the bulk mode frequencies of each single-domain thin-film segment not only depend on the direction of the segment's easy-axes with respect to the applied magnetic field but also depend on the vertex magnetization configurations of nearby vertices. Therefore, the FMR modes can be controlled by altering the vertex magnetization texture. Moreover, we distinguish between vertex center modes (VCMs) and localized domain wall (LDW) modes. We show that the LDW mode evolves during the nucleation process of domain walls and that VCMs and LDW modes can be controlled using specific field protocols, which have important implications for future design of magnonic and spintronic devices.
|Journal||Applied Physics Letters|
|State||Published - Jan 25 2021|
Bibliographical noteFunding Information:
The research at the University of Kentucky was supported by the U.S. NSF under Grant No. DMR-1506979, the UK Center for Advanced Materials, the UK Center for Computational Sciences, and the UK Center for Nanoscale Science and Engineering. The research at Argonne National Laboratory, a U.S. Department of Energy Office of Science User Facility, was supported under Contract No. DE-AC02-06CH11357.
© 2021 Author(s).
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)