Bilayer artificial spin ice: magnetic force switching and basic thermodynamics
arXiv:2009.02380 · doi:10.1063/5.0028428
Abstract
We study an artificial spin ice system consisting of two identical layers separated by a height offset . For small separation, the layers are shown to attract each other, provided the whole system is in the ground state. Such an attraction comes about by means of a power-law force that we compare to van der Waals forces. When magnetic monopoles occur in one (or both) layers, the scenario becomes even more interesting and these layers may also repel each other. By tuning parameters like and monopole distance, switching between attraction and repulsion may be accomplished in a feasible way. Regarding its thermodynamics, the specific heat peak shifts to lower temperature as increases.
References in corpus (23)
- Quantum Spin Liquids
- Spin Ice State in Frustrated Magnetic Pyrochlore Materials
- Magnetic Monopoles in Spin Ice
- Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands
- Colloquium: Artificial spin ice: Designing and imaging magnetic frustration
- Magnetic Charge Transport
- Magnetic multipole analysis of kagome and artificial ice dipolar arrays
- Extensive degeneracy, Coulomb phase and magnetic monopoles in an artificial realization of the square ice model
- Artificial square ice and related dipolar nanoarrays
- Magnetic monopole and string excitations in a two-dimensional spin ice
- Conditions for free magnetic monopoles in nanoscale square arrays of dipolar spin ice
- Ice Rule and Emergent Frustration in Particle Ice and Beyond
- 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
- Thermally and field-driven mobility of emergent magnetic charges in square artificial spin ice
- Realization of Rectangular Artificial Spin Ice and Direct Observation of High Energy Topology
- Ice-rule made manifold: phase transitions, topological defects and manifold restoration in two-dimensional artificial spin systems
- Experimental and theoretical evidences for the ice regime in planar artificial spin ices
- Imaging the stochastic microstructure and dynamic development of correlations in perpendicular artificial spin ice
- Competing orders for the colloidal kagome ice: the importance of in-trap motion of the particles
- Naked-eye visualization of geometric frustration effects in macroscopic spin ices