Understanding magnetotransport signatures in networks of connected permalloy nanowires

Abstract

The change in electrical resistance associated with the application of an external magnetic field is known as the magnetoresistance (MR). The measured MR is quite complex in the class of connected networks of single-domain ferromagnetic nanowires, known as "artificial spin ice", due to the geometrically-induced collective behavior of the nanowire moments. We have conducted a thorough experimental study of the MR of a connected honeycomb artificial spin ice, and we present a simulation methodology for understanding the detailed behavior of this complex correlated magnetic system. Our results demonstrate that the behavior, even at low magnetic fields, can be well-described only by including significant contributions from the vertices at which the legs meet, opening the door to new geometrically-induced MR phenomena.

References in corpus (3)

• Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands
• Direct observation of the ice rule in artificial kagome spin ice
• Spectral analysis of topological defects in an artificial spin-ice lattice

Cited by in corpus (9)

• Ice Rule and Emergent Frustration in Particle Ice and Beyond
• High frequency dynamics modulated by collective magnetization reversal in artificial spin ice
• 3D Interconnected Magnetic Nanowire Networks as Potential Integrated Multistate Memristors
• Control of spin dynamics in artificial honeycomb spin-ice-based nanodisks
• Theory of magnetotransport in artificial kagome spin ice
• Magnetization reversal in Kagome artificial spin ice studied by first-order reversal curves
• Vertex Dependent Dynamic Response of a Connected Kagome Artificial Spin Ice
• Magnetic order in nanoscale gyroid networks
• On the Degeneracy of Spin Ice Graphs, and its Estimate via the Bethe Permanent