Spin-wave interference patterns created by spin-torque nano-oscillators for memory and computation

Abstract

Magnetization dynamics in nanomagnets has attracted broad interest since it was predicted that a dc-current flowing through a thin magnetic layer can create spin-wave excitations. These excitations are due to spin-momentum transfer, a transfer of spin angular momentum between conduction electrons and the background magnetization, that enables new types of information processing. Here we show how arrays of spin-torque nano-oscillators (STNO) can create propagating spin-wave interference patterns of use for memory and computation. Memristic transponders distributed on the thin film respond to threshold tunnel magnetoresistance (TMR) values thereby detecting the spin-waves and creating new excitation patterns. We show how groups of transponders create resonant (reverberating) spin-wave interference patterns that may be used for polychronous wave computation of arithmetic and boolean functions and information storage.

19 pages

Cited by in corpus (19)

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• Vowel recognition with four coupled spin-torque nano-oscillators
• An Introduction to Spin Wave Computing
• Reservoir computing with the frequency, phase and amplitude of spin-torque nano-oscillators
• Reservoir Computing on Spin-Torque Oscillator Array
• Few-nm tracking of magnetic vortex orbits and their decay with ultrafast Lorentz microscopy
• Direct observation and imaging of a spin-wave soliton with $p-$like symmetry
• Direct Observation of Large Amplitude Spin Excitations Localized in a Spin-Transfer Nanocontact
• Spin wave power flow and caustics in ultrathin ferromagnets with the Dzyaloshinskii-Moriya interaction
• Describing synchronization and topological excitations in arrays of magnetic spin torque oscillators through the Kuramoto model
• Intrinsic and extrinsic mirror symmetry breaking in anti-dot spin-wave waveguides
• Observation of droplet soliton drift resonances in a spin-transfer-torque nanocontact to a ferromagnetic thin film
• Spin wave excitation patterns generated by spin torque oscillators
• Magnetic Droplet Solitons
• Spin Wave Radiation by a Topological Charge Dipole
• Observation of propagating edge spin waves modes
• Effect of temperature on spin-transfer torque induced magnetic solitons
• Spin waves along the edge states