Comparing artificial frustrated magnets: tuning symmetry in nanomagnet arrays
arXiv:1003.1505 · doi:10.1103/PhysRevB.81.092406
Abstract
We study the impact of geometry on magnetostatically frustrated single-domain nanomagnet arrays. We examine square and hexagonal lattice arrays, as well as a brickwork geometry that combines the anisotropy of the square lattice and the topology of the hexagonal lattice. We find that the more highly frustrated hexagonal lattice allows for the most thorough minimization of the magnetostatic energy, and that the pair-wise correlations between moments differ qualitatively between hexagonal and brickwork lattices, although they share the same lattice topology. The results indicate that the symmetry of local interaction is more important than overall lattice topology in the accommodation of frustrated interactions.
18 pages and 4 figures
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Cited by in corpus (6)
- Vertex dynamics in finite two dimensional square spin ices
- Nambu monopoles interacting with lattice defects in two-dimensional artificial square spin ice
- Crystallizing Kagome artificial spin ice
- Artificial spin ice and vertex models
- Direct visualization of vortex ice in a nanostructured superconductor
- Magnetization states and switching in narrow-gapped ferromagnetic nanorings