Dynamics and hysteresis in square lattice artificial spin-ice
arXiv:1208.6557 · doi:10.1088/1367-2630/15/4/045029
Abstract
Dynamical effects under geometrical frustration are considered in a model for artificial spin ice on a square lattice in two dimensions. Each island of the spin ice has a three-component Heisenberg-like dipole moment subject to shape anisotropies that influence its direction. The model has real dynamics, including rotation of the magnetic degrees of freedom, going beyond the Ising-type models of spin ice. The dynamics is studied using a Langevin equation solved via a second order Heun algorithm. Thermodynamic properties such as the specific heat are presented for different couplings. A peak in specific heat is related to a type of melting-like phase transition present in the model. Hysteresis in an applied magnetic field is calculated for model parameters where the system is able to reach thermodynamic equilibrium.
Revised version
References in corpus (15)
- Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands
- Melting artificial spin ice
- Magnetic monopole and string excitations in a two-dimensional spin ice
- Disorder strength and field-driven ground state domain formation in artificial spin ice: experiment, simulation and theory
- Vertex dynamics in finite two dimensional square spin ices
- Comparing artificial frustrated magnets: tuning symmetry in nanomagnet arrays
- Domain dynamics and fluctuations in artificial square ice at finite temperatures
- Diversity enabling equilibration: disorder and the ground state in artificial spin ice
- Thermodynamics of elementary excitations in artificial magnetic square ice
- From confinement to deconfinement of magnetic monopoles in artificial rectangular spin ices
- Extending spin ice concepts to another geometry: the artificial triangular spin ice
- Nambu monopoles interacting with lattice defects in two-dimensional artificial square spin ice
- Multi-Step Ordering in Kagome and Square Artificial Spin Ice
- Out of equilibrium dynamics in the bidimensional spin-ice model
- Magnetic anisotropy of elongated thin ferromagnetic nano-islands for artifical spin ice arrays
Cited by in corpus (14)
- Artificial spin ice and vertex models
- Effect of long-and short-range interactions on the thermodynamics of dipolar spin ice
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- Tunable artificial vortex ice in nanostructured superconductors with frustrated kagome lattice of paired antidots
- Static properties of 2D spin-ice as a sixteen-vertex model
- Efficient demagnetization protocol for the artificial triangular spin ice
- Magnetic oscillation modes in square lattice artificial spin ice
- Imaging the stochastic microstructure and dynamic development of correlations in perpendicular artificial spin ice
- Order and thermalized dynamics in Heisenberg-like square and Kagomé spin ices
- Naked-eye visualization of geometric frustration effects in macroscopic spin ices
- Metastability and dynamics in remanent states of square artificial spin ice with long-range dipole interactions
- Metastability and dynamic modes in magnetic island chains
- Transverse magnetic field effects on metastable states of magnetic island chains
- State transitions and hysteresis in a transverse magnetic island chain