Modelling nanomagnet vertex dynamics through Coulomb charges
arXiv:2402.03036 · doi:10.1088/1361-648X/ad5acc
Abstract
We investigate the magnetization dynamics in nanomagnet vertices often found in artificial spin ices. Our analysis involves creating a simplified model that depicts edge magnetization using magnetic charges. We utilize the model to explore the energy landscape, its associated curvatures, and the fundamental modes. Our study uncovers specific magnonic regimes and transitions between magnetization states, marked by zero-modes, which can be understood within the framework of Landau theory. To verify our model, we compare it with micromagnetic simulations, demonstrating a noteworthy agreement.
articles with 7 pages and 3 figures. Supplemental material with 8 pages and 7 figures
References in corpus (12)
- Extensive degeneracy, Coulomb phase and magnetic monopoles in an artificial realization of the square ice model
- Spectral analysis of topological defects in an artificial spin-ice lattice
- Realizing Colloidal Artificial Ice on Arrays of Optical Traps
- Ice Rule and Emergent Frustration in Particle Ice and Beyond
- Entropy-reduced retention times in magnetic memory elements: A case of the Meyer-Neldel Compensation Rule
- Defect Dynamics in Artificial Colloidal Ice: Real-Time Observation, Manipulation and Logic Gate
- The effect of confinement on thermally induced fluctuations in nanomagnets
- From Vertices to Vortices in magnetic nanoislands
- Gænice: a general model for magnon band structure of artificial spin ices
- Thermal excitations within and among mesospins in artificial spin ice
- Texture fluctuations and emergent dynamics in coupled nanomagnets
- Eigenmodes of magnetic skyrmion lattices