Chiral spin-wave velocities induced by all-garnet interfacial Dzyaloshinskii-Moriya interaction in ultrathin yttrium iron garnet films
arXiv:1910.02599 · doi:10.1103/PhysRevLett.124.027203
Abstract
Spin waves can probe the Dzyaloshinskii-Moriya interaction (DMI) which gives rise to topological spin textures, such as skyrmions. However, the DMI has not yet been reported in yttrium iron garnet (YIG) with arguably the lowest damping for spin waves. In this work, we experimentally evidence the interfacial DMI in a 7~nm-thick YIG film by measuring the nonreciprocal spin wave propagation in terms of frequency, amplitude and most importantly group velocities using all electrical spin-wave spectroscopy. The velocities of propagating spin waves show chirality among three vectors, i.e. the film normal direction, applied field and spin-wave wavevector. By measuring the asymmetric group velocities, we extract a DMI constant of 16~J/m which we independently confirm by Brillouin light scattering. Thickness-dependent measurements reveal that the DMI originates from the oxide interface between the YIG and garnet substrate. The interfacial DMI discovered in the ultrathin YIG films is of key importance for functional chiral magnonics as ultra-low spin-wave damping can be achieved.
References in corpus (28)
- Skyrmion Lattice in a Chiral Magnet
- Tunable Rashba spin-orbit interaction at oxide interfaces
- Long distance transport of magnon spin information in a magnetic insulator at room temperature
- Realization of XNOR and NAND spin-wave logic gates
- Spectroscopic confirmation of linear relation between Heisenberg- and interfacial Dzyaloshinskii-Moriya-exchange in polycrystalline metal films
- Spin-Wave Propagation in the Presence of Interfacial Dzyaloshinskii-Moriya Interaction
- Interface ferromagnetism and orbital reconstruction in BiFeO3- La0.7Sr0.3MnO3 heterostructures
- Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction
- Significant Dzyaloshinskii-Moriya Interaction at Graphene-Ferromagnet Interfaces due to Rashba-effect
- High-speed domain wall racetracks in a magnetic insulator
- A spin wave diode
- Ferromagnetic exchange, spin-orbit coupling and spiral magnetism at the LaAlO_3/SrTiO_3 interface
- Topological Hall effect at above room temperature in heterostructures composed of a magnetic insulator and a heavy metal
- Magnetization oscillations and waves driven by pure spin currents
- Scaling of Dzyaloshinskii Moriya interaction at heavy metal and ferromagnetic metal interfaces
- Enhanced Stability of Skyrmions in Two-Dimensional Chiral Magnets with Rashba Spin-Orbit Coupling
- Frequency non-reciprocity of surface spin wave in Permalloy thin films
- Interfacial Dzyaloshinskii-Moriya interaction and chiral magnetic textures in a ferrimagnetic insulator
- All electrical propagating spin wave spectroscopy with broadband wavevector capability
- Dzyaloshinskii Moriya interaction across antiferromagnet / ferromagnet interface
- Creation of uni-directional spin-wave emitters by utilizing interfacial Dzyaloshinskii-Moriya interaction
- Propagating spin waves in nanometer-thick yttrium iron garnet films: Dependence on wave vector, magnetic field strength and angle
- Spin wave power flow and caustics in ultrathin ferromagnets with the Dzyaloshinskii-Moriya interaction
- Chiral excitation of spin waves in ferromagnetic films
- Synthetic antiferromagnetic coupling between ultra-thin insulating garnets
- Topological characterization of classical waves: the topological origin of magnetostatic surface spin waves
- Tunable Snell's law for spin waves in heterochiral magnetic films
- Making the Dzyaloshinskii-Moriya interaction visible
Cited by in corpus (31)
- Roadmap on Spin-Wave Computing
- Hybrid magnonics: physics, circuits and applications for coherent information processing
- Oxide spin-orbitronics: spin-charge interconversion and topological spin textures
- Chirality as Generalized Spin-Orbit Interaction in Spintronics
- Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO
- Control of nonlocal magnon spin transport via magnon drift currents
- Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator
- Observation of nonreciprocal magnon Hanle effect
- Enhancing the spin-photon coupling with a micromagnet
- Nonreciprocal Emergence of Hybridized Magnons in magnetic thin Films
- Enhanced magnon spin current using the bosonic Klein paradox
- All-electrical Magnon Transport Experiments in Magnetically Ordered Insulators
- Unidirectional Microwave Transduction with Chirality Selected Short-Wavelength Magnon Excitations
- Strong coupling of quantized spin waves in ferromagnetic bilayers
- Topological Hybrids of Magnons and Magnon Bound Pairs
- Spin-Wave Doppler Shift by Magnon Drag in Magnetic Insulators
- Surface-symmetry-driven Dzyaloshinskii--Moriya interaction and canted ferrimagnetism in collinear magnetoelectric antiferromagnet CrO
- Temperature-sensitive spin-wave nonreciprocity induced by interlayer dipolar coupling in ferromagnet/X (X=paramagnet, superconductor) hybrid systems
- Magnon hybridization in ferrimagnetic heterostructures
- Unidirectional spin waves measured using propagating spin wave spectroscopy
- Unidirectional propagation of spin waves excited by femtosecond laser pulses in a planar waveguide
- Current-Controlled Magnon-Magnon Coupling in an On-Chip Cavity Resonator
- Breaking Space Inversion-Symmetry to Obtain Asymmetric Spin-Wave Excitation in Systems with Nonuniform Magnetic Exchange
- Nonreciprocal Spin Waves Driven by Left-Hand Microwaves
- Observation and Control of Chiral Spin Frustration in BiYIG Thin Films
- Macroscopic, layered onion shell like magnetic domain structure generated in YIG film using ultrashort, megagauss magnetic pulses
- Brillouin Light Scattering from Quantized Spin Waves in Nanowires with Antisymmetric Exchange Interactions
- Using surface plasmons to detect spin inertia
- Theory of drift-enabled control in nonlocal magnon transport
- Brillouin-Mandelstam Light Scattering Spectroscopy: Applications in Phononics and Spintronics
- Asymmetric defect distribution generates bulk Dzyaloshinskii-Moriya interaction in Pt/Co/Pt