Skyrmion Gas Manipulation for Probabilistic Computing

Abstract

The topologically protected magnetic spin configurations known as skyrmions offer promising applications due to their stability, mobility and localization. In this work, we emphasize how to leverage the thermally driven dynamics of an ensemble of such particles to perform computing tasks. We propose a device employing a skyrmion gas to reshuffle a random signal into an uncorrelated copy of itself. This is demonstrated by modelling the ensemble dynamics in a collective coordinate approach where skyrmion-skyrmion and skyrmion-boundary interactions are accounted for phenomenologically. Our numerical results are used to develop a proof-of-concept for an energy efficient ($\sim \mu \mathrm{W}$) device with a low area imprint ($\sim \mu {\mathrm{m}}^2$). Whereas its immediate application to stochastic computing circuit designs will be made apparent, we argue that its basic functionality, reminiscent of an integrate-and-fire neuron, qualifies it as a novel bio-inspired building block.

41 pages, 20 figures

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Cited by in corpus (74)

• Skyrmion-electronics: Writing, deleting, reading and processing magnetic skyrmions toward spintronic applications
• Full phase diagram of isolated skyrmions in a ferromagnet
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• The promise of spintronics for unconventional computing
• Reservoir Computing with Random Skyrmion Textures
• Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
• Magnetic Skyrmions for Unconventional Computing
• Brownian reservoir computing realized using geometrically confined skyrmions
• Experimental creation and annihilation of nonvolatile magnetic skyrmions using voltage control of magnetic anisotropy without an external magnetic field
• Pattern recognition with neuromorphic computing using magnetic-field induced dynamics of skyrmions
• Direct demonstration of topological stability of magnetic skyrmions via topology manipulation
• Computing and Memory Technologies based on Magnetic Skyrmions
• Skyrmion pinning energetics in thin film systems
• A spiking neuron constructed by the skyrmion-based spin torque nano-oscillator
• Detection of antiskyrmions by topological Hall effect in Heusler compounds
• Coexistence of distinct skyrmion phases observed in hybrid ferromagnetic/ferrimagnetic multilayers
• Skyrmion Qubits: Challenges For Future Quantum Computing Applications
• Characterizing breathing dynamics of magnetic (anti-)skyrmions within the Hamiltonian formalism
• Resonate and Fire Neuron with Fixed Magnetic Skyrmions
• Perspective on unconventional computing using magnetic skyrmions
• Anisotropic skyrmion diffusion controlled by field-induced symmetry breaking
• Magnetic skyrmion interactions in the micromagnetic framework
• Visualizing the strongly reshaped skyrmion Hall effect in multilayer wire devices
• Current-driven skyrmion Depinning in Magnetic Granular Films
• Programmable skyrmion logic gates based on skyrmion tunneling
• Neuromorphic weighted sums with magnetic skyrmions
• Walker breakdown with a twist: Dynamics of multilayer domain walls and skyrmions driven by spin-orbit torque
• A quantitative description of skyrmions in ultrathin ferromagnetic films and rigidity of degree $\pm 1$ harmonic maps from ${\mathbb{R}}^2$ to ${\mathbb{S}}^2$
• Targeted Writing and Deleting of Magnetic Skyrmions in Two-Terminal Nanowire Devices
• Twisted skyrmion at domain boundaries and the method of image
• Skyrmion fluid and bimeron glass protected by a chiral spin liquid on a kagome lattice
• Circuits and excitations to enable Brownian token-based computing with skyrmions
• Enhanced thermally-activated skyrmion diffusion with tunable effective gyrotropic force
• Chiral Spin Textures for Next-Generation Memory and Unconventional Computing
• Brownian electric bubble quasiparticles
• Configurable pixelated skyrmions on nanoscale magnetic grids
• Guided Skyrmion Motion Along Pinning Array Interfaces
• Dzyaloshinskii-Moriya interaction induced by an ultrashort electromagnetic pulse: Application to coherent (anti)ferromagnetic skyrmion nucleation
• Zero-field skyrmionic states and in-field edge-skyrmions induced by boundary tuning
• Configurational entropy of magnetic skyrmions as an ideal gas
• Deterministic generation of skyrmions and antiskyrmions by electric current
• Skyrmion generation from irreversible fission of stripes in chiral multilayer films
• Imaging Topological Defect Dynamics Mediating 2D Skyrmion Lattice Melting
• Rotating edge-field driven processing of chiral spin textures in racetrack devices
• Structural transition of skyrmion quasiparticles under compression
• Realizing Quantitative Quasiparticle Modeling of Skyrmion Dynamics in Arbitrary Potentials
• Current-Induced Dynamics of Chiral Magnetic Structures: Creation, Motion, and Applications
• Three-dimensional structure and formation mechanism of biskyrmions in uniaxial ferromagnets
• Quantum Brownian Motion of a Magnetic Skyrmion
• Friedel oscillations induced by magnetic skyrmions: from scattering properties to all-electrical detection
• Role of magnetic skyrmions for the solution of the shortest path problem
• Creating and Deleting a Single Dipolar Skyrmion by Surface Spin Twists
• Theoretical study on stabilization and destabilization of magnetic skyrmions by uniaxial-strain-induced anisotropic Dzyaloshinskii--Moriya interactions
• Confinement of Skyrmions in Nanoscale FeGe Device-like Structures
• Robust cycloid crossover driven by anisotropy in the skyrmion host GaV${}_4$S${}_8$
• Tuning the coexistence regime of incomplete and tubular skyrmions in ferro/ferri/ferromagnetic trilayers
• Writing and detecting topological charges in exfoliated Fe${}_{5-x}$GeTe${}_2$
• Spin-wave mediated interactions for Majority Computation using Skyrmions and Spin-torque Nano-oscillators
• Green's function formalism for nonlocal elliptical magnon transport
• Thermal motion of skyrmion arrays in granular films
• Determining key spin-orbitronic parameters by means of propagating spin waves
• Topological charge analysis of dynamic process of transition to Néel-type skyrmion: role of domain wall skyrmions
• Transformation of a cellular skyrmion to polyomino-like structures
• Quantifying the magnetic interactions governing chiral spin textures using deep neural networks
• Stability and magnetic properties of Fe double-layers on Ir (111)
• Inhomogeneous Electric Fields for Precise Control and Displacement of Polar Textures
• Transfer Entropy and Flow of Information in Two-Skyrmion System
• Creating currents of electric bubbles
• Logical and Physical Reversibility of Conservative Skyrmion Logic
• Determinantal polynomial wave functions induced by random matrices
• Controllable dispersion of domain wall movement in antiferromagnetic thin films at finite temperatures
• Correlating on-the-fly Electrical and Optical Skyrmion Readout
• Topological characterization of dynamic chiral magnetic textures using machine learning