Angular Dependent Magnetization Dynamics of Kagome Artificial Spin Ice Incorporating Topological Defects
arXiv:1705.00270 · doi:10.1103/PhysRevB.96.014426
Abstract
We report angular-dependent spin-wave spectroscopy on kagome artificial spin ice made of large arrays of interconnected Ni80Fe20 nanobars. Spectra taken in saturated and disordered states exhibit a series of resonances with characteristic in-plane angular dependencies. Micromagnetic simulations allow us to interpret characteristic resonances of a two-step magnetization reversal of the nanomagnets. The dynamic properties are consistent with topological defects that are provoked via a magnetic field applied at specific angles. Simulations that we performed on previously investigated kagome artificial spin ice consisting of isolated nanobars show characteristic discrepancies in the spin wave modes which we explain by the absence of vertices.
arXiv comment14 pages and 5 figures
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Cited by in corpus (7)
- Sculpting the Spin-Wave Response of Artificial Spin Ice via Microstate Selection
- Direct Observation of Magnon Modes in Kagome Artificial Spin Ice with Topological Defects
- Angular Dependent Magnetization Dynamics with Mirror-symmetric Excitations in Artificial Quasicrystalline Nanomagnet Lattices
- Observation of mode splitting in artificial spin ice
- Comparison of Spin-Wave Modes in Connected and Disconnected Artificial Spin Ice Nanostructures Using Brillouin Light Scattering Spectroscopy
- Vertex Dependent Dynamic Response of a Connected Kagome Artificial Spin Ice
- Angular-Dependent Dynamic Response and Magnetization Reversal in Fibonacci-Distorted, Kagome Artificial Spin Ice