Domain wall-based spin-Hall nano-oscillators

Abstract

In the last decade, two revolutionary concepts in nano magnetism emerged from research for storage technologies and advanced information processing. The first suggests the use of magnetic domain walls (DWs) in ferromagnetic nanowires to permanently store information in DW racetrack memories. The second proposes a hardware realisation of neuromorphic computing in nanomagnets using nonlinear magnetic oscillations in the GHz range. Both ideas originate from the transfer of angular momentum from conduction electrons to localised spins in ferromagnets, either to push data encoded in DWs along nanowires or to sustain magnetic oscillations in artificial neurones. Even though both concepts share a common ground, they live on very different time scales which rendered them incompatible so far. Here, we bridge both ideas by demonstrating the excitation of magnetic auto-oscillations inside nano-scale DWs using pure spin currents.

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• Skyrmion Lattice in a Chiral Magnet
• The design and verification of Mumax3
• Spin Hall effect
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• The building blocks of magnonics
• Spin torque building blocks
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• On the origin of magnetization auto-oscillations in constriction-based spin Hall nano-oscillators
• Bridging magnonics and spin-orbitronics
• Tunable steady-state domain wall oscillator with perpendicular magnetic anisotropy
• Exchange stiffness in ultrathin perpendicularly-magnetized CoFeB layers determined using spin wave spectroscopy

Cited by in corpus (18)

• Roadmap of spin-orbit torques
• Roadmap on Spin-Wave Computing
• Magnetic texture based magnonics
• Spin-orbit-torque magnonics
• Evidence for spin current driven Bose-Einstein condensation of magnons
• Energy-efficient W${}_{\text{100-x}}$Ta${}_{\text{x}}$/CoFeB/MgO spin Hall nano-oscillators
• Width dependent auto-oscillating properties of constriction based spin Hall nano-oscillators
• Spin-Hall nanooscillator based on an antiferromagnetic domain wall
• Edge localization of spin waves in antidot multilayers with perpendicular magnetic anisotropy
• Bipolar spin Hall nano-oscillators
• Dimensional crossover in spin Hall oscillators
• High Frequency Domain Wall Oscillations in Ferromagnetic Nanowire with a Nanoscale Dzyaloshinskii Moriya Interaction (DMI) Region
• Effects of spin-orbit torque on the ferromagnetic and exchange spin wave modes in ferrimagnetic CoGd alloy
• Voltage control of frequency, effective damping and threshold current in nano-constriction-based spin Hall nano-oscillators
• Spin orbit torque nano-oscillators by dipole field-localized spin wave modes
• Ultra-low Power Domain Wall Device for Spin-based Neuromorphic Computing
• Mutual synchronization in spin torque and spin Hall nano-oscillators
• Giant Exfoliation Induced Magnetic Coercivity in Fe${}_3$GaTe${}_2$