Tunable energy transfer between dipolar-coupled magnetic disks by stimulated vortex gyration

Abstract

A wide variety of coupled harmonic oscillators exist in nature1. Coupling between different oscillators allows for the possibility of mutual energy transfer between them2-4 and the information-signal propagation5,6. Low-energy input signals and their transport with low-energy dissipation are the key technical factors in the design of information processing devices7. Here, utilizing the concept of coupled oscillators, we experimentally demonstrated a robust new mechanism for energy transfer between spatially separated dipolar-coupled magnetic disks - stimulated vortex gyration. Direct experimental evidence was obtained by time-resolved soft X-ray microscopy. The rate of energy transfer from one disk to the other was deduced from the two normal modes' frequency splitting caused by dipolar interaction. This mechanism provides the advantages of tunable energy transfer rate, low-power input signal, and low-energy dissipation for magnetic elements with negligible damping. Coupled vortex-state disks are promising candidates for information-signal processing devices that operate above room temperature.

References in corpus (9)

• Large microwave generation from d.c. driven magnetic vortex oscillators in magnetic tunnel junctions
• Current-driven resonant excitation of magnetic vortex
• Time-Resolved X-ray Microscopy of Spin-Torque-Induced Magnetic Vortex Gyration
• Dynamics of coupled vortices in a pair of ferromagnetic disks
• Electron Spin for Classical Information Processing: A Brief Survey of Spin-Based Logic Devices, Gates and Circuits
• Low-frequency vortex dynamic susceptibility and relaxation in mesoscopic ferromagnetic dots
• Vortex core switching by coherent excitation with single in-plane magnetic field pulses
• Two Circular-Rotational Eigenmodes in Vortex Gyrotropic Motions in Soft Magnetic Nanodots
• Memory-bit selective recording in vortex-core cross-point architecture

Cited by in corpus (25)

• Topological insulators and semimetals in classical magnetic systems
• Skyrmion ground state and gyration of skyrmions in magnetic nanodisks without the Dzyaloshinsky-Moriya interaction
• Chiral edge mode in the coupled dynamics of magnetic solitons in a honeycomb lattice
• Coupled skyrmion breathing modes in synthetic ferri- and antiferromagnets
• Dynamic Excitations of Chiral Magnetic Textures
• Robust synchronization of an arbitrary number of spin-torque driven vortex nanooscillators
• Optimizing magneto-dipolar interactions for synchronizing vortex based spin-torque nano-oscillators
• Normal modes of coupled vortex gyration in two spatially separated magnetic nanodisks
• Second-order topological insulator in breathing square lattice of magnetic vortices
• Coupled breathing modes in one-dimensional Skyrmion lattices
• X-ray imaging of spin currents and magnetisation dynamics at the nanoscale
• Broadband probing magnetization dynamics of the coupled vortex state permalloy layers in nanopillars
• Interaction between magnetic vortex cores in a pair of nonidentical nanodisks
• Magnonic bending, phase shifting and interferometry in a 2D reconfigurable nanodisk crystal
• Magnon-induced non-Markovian friction of a domain wall in a ferromagnet
• Dynamics of a coupled spin vortex pair in dipolar spinor Bose-Einstein condensates
• Single array of magnetic vortex disks uses in-plane anisotropy to create different logic gates
• Indirect switching of vortex polarity through magnetic dynamic coupling
• Realizing Corner States in Artificial Crystals Based on Topological Spin Textures
• Large amplitude vortex gyration in Permalloy/Bi${}_2$Se${}_3$-like heterostructures
• Driven energy transfer between coupled modes in spin-torque oscillators
• Chirality-mediated bistability and strong frequency downshifting of the gyrotropic resonance of a dynamically de-stiffened magnetic vortex
• Controlling energy transfer time between two coupled magnetic vortex-state disks
• Tri-state Buffer: Magnetic Vortex Transistor Based Logic Devices
• Wave modes of collective vortex gyration in dipolar-coupled-dot-array magnonic crystals