Spectral analysis of topological defects in an artificial spin-ice lattice
arXiv:1209.4926 · doi:10.1103/PhysRevLett.110.117205
Abstract
Arrays of suitably patterned and arranged magnetic elements may display artificial spin-ice structures with topological defects in the magnetization, such as Dirac monopoles and Dirac strings. It is known that these defects strongly influence the quasi-static and equilibrium behavior of the spin-ice lattice. Here we study the eigenmode dynamics of such defects in a square lattice consisting of stadium-like thin film elements using micromagnetic simulations. We find that the topological defects display distinct signatures in the mode spectrum, providing a means to qualitatively and quantitatively analyze monopoles and strings which can be measured experimentally.
Minor changes to the text
References in corpus (6)
- Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands
- Dirac Strings and Magnetic Monopoles in Spin Ice Dy2Ti2O7
- Direct observation of the ice rule in artificial kagome spin ice
- Artificial square ice and related dipolar nanoarrays
- Magnetic monopole and string excitations in a two-dimensional spin ice
- Observing Monopoles in a Magnetic Analog of Ice
Cited by in corpus (30)
- Roadmap on Spin-Wave Computing
- Ice Rule and Emergent Frustration in Particle Ice and Beyond
- Parametric Auto-Excitation of Magnetic Droplet Soliton Perimeter Modes
- Coupled skyrmion breathing modes in synthetic ferri- and antiferromagnets
- Understanding magnetotransport signatures in networks of connected permalloy nanowires
- High frequency dynamics modulated by collective magnetization reversal in artificial spin ice
- Ultrastrong magnon-magnon coupling and chiral spin-texture control in a dipolar 3D multilayered artificial spin-vortex ice
- Dynamic coupling and spin-wave dispersions in a magnetic hybrid system made of an artificial spin-ice structure and an extended NiFe underlayer
- Thermally induced magnetic relaxation in square artificial spin ice
- Magnetic Yoking and Tunable Interactions in FePt-Based Hard/Soft Bilayers
- Observation of mode splitting in artificial spin ice
- A Brillouin light scattering study of the spin-wave magnetic field dependence in a magnetic hybrid system made of an artificial spin-ice structure and a film underlayer
- Spin-wave dynamics and symmetry breaking in an artificial spin ice
- The effect of confinement on thermally induced fluctuations in nanomagnets
- Artificial Spin Ice: A Tutorial on Design and Control of Geometry, Microstate, Magnon Dynamics & Neuromorphic Computing
- Collective ferromagnetism of artificial square spin ice
- Gænice: a general model for magnon band structure of artificial spin ices
- Writable spin wave nanochannels in an artificial-spin-ice-mediated ferromagnetic thin film
- Magnetic metamaterials by ion-implantation
- Texture fluctuations and emergent dynamics in coupled nanomagnets
- Tailoring magnetization reversal of a single-domain bar nanomagnet via its end geometry
- Metastability and dynamic modes in magnetic island chains
- Metastability and dynamics in remanent states of square artificial spin ice with long-range dipole interactions
- Ferromagnetic resonance in 3D-tilted square artificial spin ices
- Modelling nanomagnet vertex dynamics through Coulomb charges
- Transverse magnetic field effects on metastable states of magnetic island chains
- Defect-sensitive High-frequency Modes in a Three-Dimensional Artificial Magnetic Crystal
- Frequency comb in a macroscopic mechano-magnetic artificial spin ice
- Unveiling Micrometer-Range Spin-Wave Transport in Artificial Spin Ice
- Dynamic Fingerprints of Synthetic Antiferromagnet Nanostructures with Interfacial Dzyaloshinskii-Moriya Interaction