Tunable magnon-magnon coupling in synthetic antiferromagnets

Abstract

In this work, we study magnon-magnon coupling in synthetic antiferromagnets (SyAFs) using microwave spectroscopy at room temperature. Two distinct spin-wave modes are clearly observed and are hybridised at degeneracy points. We provide a phenomenological model that captures the coupling phenomena and experimentally demonstrate that the coupling strength is controlled by the out-of-plane tilt angle as well as the interlayer exchange field. We numerically show that a spin-current mediated damping in SyAFs plays a role in influencing the coupling strength.

arXiv comment13 pages, 11 figures(including supplementary)

References in corpus (21)

• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems
• Ultrastrong coupling between light and matter
• Strongly coupled magnons and cavity microwave photons
• High cooperativity in coupled microwave resonator ferrimagnetic insulator hybrids
• Hybrid quantum systems based on magnonics
• Dynamic exchange coupling in magnetic bilayers
• Level Attraction Due to Dissipative Magnon-Photon Coupling
• Gigahertz frequency antiferromagnetic resonance and strong magnon-magnon coupling in the layered crystal CrCl3
• Spin waves in coupled YIG/Co heterostructures
• Exchange-enhanced Ultrastrong Magnon-Magnon Coupling in a Compensated Ferrimagnet
• Coherent spin pumping in a strongly coupled magnon-magnon hybrid system
• Electron Spin Resonance at the Level of 10000 Spins Using Low Impedance Superconducting Resonators
• Topological Properties of a Coupled Spin-Photon System Induced by Damping
• Magnetization damping in noncollinear spin valves with antiferromagnetic interlayer couplings
• Large spin pumping effect in antisymmetric precession of Ni${}_{79}$Fe${}_{21}$/Ru/Ni${}_{79}$Fe${}_{21}$
• Enhancement of the Gilbert damping constant due to spin pumping in noncollinear ferromagnet/nonmagnet/ferromagnet trilayer systems
• Spin transport parameters of NbN thin films characterised by spin pumping experiments
• Magnetization dynamics in synthetic antiferromagnets: Role of dynamical energy and mutual spin pumping
• Circuit-quantum electrodynamics with direct magnetic coupling to single-atom spin qubits in isotopically enriched 28Si
• Dynamic exchange via spin currents in acoustic and optical modes of ferromagnetic resonance in spin-valve structures

Cited by in corpus (18)

• Perspective: non-Hermitian physics in magnetic systems
• Reconfigurable magnonic mode-hybridisation and spectral control in a bicomponent artificial spin ice
• Symmetry breaking induced magnon-magnon coupling in synthetic antiferromagnets
• Strong Magnon-Magnon Coupling in Synthetic Antiferromagnets
• Self-hybridization and tunable magnon-magnon coupling in van der Waals synthetic magnets
• Ultrastrong magnon-magnon coupling and chiral spin-texture control in a dipolar 3D multilayered artificial spin-vortex ice
• Skyrmion Based Magnonic Crystals
• Anisotropic magnon-magnon coupling in synthetic antiferromagnets
• Observation of mode splitting in artificial spin ice
• Cross-sublattice Spin Pumping and Magnon Level Attraction in van der Waals Antiferromagnets
• Parity-controlled spin-wave excitations in synthetic antiferromagnets
• Cavity magnomechanical coupling with coupled magnon modes in a synthetic antiferromagnet
• Nonreciprocal collective magnetostatic wave modes in geometrically asymmetric bilayer structure with nonmagnetic spacer
• Symmetry effects on the static and dynamic properties of coupled magnetic oscillators
• Observation of thermally activated coherent magnon-magnon coupling in a magnonic hybrid system
• Diverging entanglement of critical magnons in easy-axis antiferromagnets
• Observation of a non-reciprocal skyrmion Hall effect of hybrid chiral skyrmion tubes in synthetic antiferromagnetic multilayers
• Ground states and magnonics in orthogonally-coupled symmetric all-antiferromagnetic junctions