Rotating edge-field driven processing of chiral spin textures in racetrack devices

Abstract

Topologically distinct magnetic structures like skyrmions, domain walls, and the uniformly magnetized state have multiple applications in logic devices, sensors, and as bits of information. One of the most promising concepts for applying these bits is the racetrack architecture controlled by electric currents or magnetic driving fields. In state-of-the-art racetracks, these fields or currents are applied to the whole circuit. Here, we employ micromagnetic and atomistic simulations to establish a concept for racetrack memories free of global driving forces. Surprisingly, we realize that mixed sequences of topologically distinct objects can be created and propagated over far distances exclusively by local rotation of magnetization at the sample boundaries. We reveal the dependence between the chirality of the rotation and the direction of propagation and define the phase space where the proposed procedure can be realized. The advantages of this approach are the exclusion of high current and field densities as well as its compatibility with an energy-efficient three-dimensional design.

arXiv comment23 pages, 7 figures

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Cited by in corpus (9)

• Controlled Creation of Quantum Skyrmions
• Plane wave implementation of the magnetic force theorem for magnetic exchange constants: Application to bulk Fe, Co and Ni
• Creating arbitrary sequences of mobile magnetic skyrmions and antiskyrmions
• Field-driven skyrmion motion through velocity equipartition between skyrmions and a domain wall
• Circular motion of non-collinear spin textures in Corbino disks: Dynamics of Néel- versus Bloch-type skyrmions and skyrmioniums
• The quantum skyrmion Hall effect in f electron systems
• Spin Wave Driven Skyrmions in a Bipartite Antiferromagnetic Lattice
• Creation and motion of antiferromagnetic skyrmions by edge manipulation
• Soliton penetration from edges in a monoaxial chiral magnet