A new look on the two-dimensional Ising model: thermal artificial spins

Abstract

We present a direct experimental investigation of the thermal ordering in an artificial analogue of an asymmetric two dimensional Ising system composed of a rectangular array of nano-fabricated magnetostatically interacting islands. During fabrication and below a critical thickness of the magnetic material the islands are thermally fluctuating and thus the system is able to explore its phase space. Above the critical thickness the islands freeze-in resulting in an arrested thermalized state for the array. Determining the magnetic state of the array we demonstrate a genuine artificial two-dimensional Ising system which can be analyzed in the context of nearest neighbour interactions.

References in corpus (1)

• Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands

Cited by in corpus (22)

• Intrinsic optimization using stochastic nanomagnets
• Ice Rule and Emergent Frustration in Particle Ice and Beyond
• The Inner Phases of Colloidal Hexagonal Ice
• Competing interactions in artificial spin chains
• Ice-rule made manifold: phase transitions, topological defects and manifold restoration in two-dimensional artificial spin systems
• Effect of long-and short-range interactions on the thermodynamics of dipolar spin ice
• Reentrance of disorder in the anisotropic shuriken Ising model
• Hysteresis in Two Dimensional Arrays of Magnetic Nanoparticles
• The effect of confinement on thermally induced fluctuations in nanomagnets
• Tuning magnetic charge population and mobility in unidirectional array of nanomagnets as a function of lattice parameters
• Temperature induced collapse of spin dimensionality in magnetic metamaterials
• Thermal excitations within and among mesospins in artificial spin ice
• Modal frustration and periodicity breaking in artificial spin ice
• Intermediate phase and pseudo phase transition in an artificial spin ice model
• Texture fluctuations and emergent dynamics in coupled nanomagnets
• Field-induced antiferromagnetic correlations in a nanopatterned van der Waals ferromagnet: a potential artificial spin ice
• Topology by Design in Magnetic nano-Materials: Artificial Spin Ice
• Magnetic Order and Long-Range Interactions in Mesoscopic Ising Chains
• Long-range order in arrays of composite and monolithic magneto-toroidal moments
• Emergent tri-criticality in magnetic metamaterials
• Co-existing magnetization reversal mechanisms in shakti spin ice systems
• Long-Range Magnetic Order in Structurally Embedded Mesospin Metamaterials