Nonreciprocal spin wave propagation in chiral-lattice ferromagnets

Abstract

Spin current, i.e. the flow of spin angular momentum or magnetic moment, has recently attracted much attention as the promising alternative for charge current with better energy efficiency. Genuine spin current is generally carried by the spin wave (propagating spin precession) in insulating ferromagnets, and should hold the chiral symmetry when it propagates along the spin direction. Here, we experimentally demonstrate that such a spin wave spin current (SWSC) shows nonreciprocal propagation characters in a chiral-lattice ferromagnet. This phenomenon originates from the interference of chirality between the SWSC and crystal-lattice, which is mediated by the relativistic spin-orbit interaction. The present finding enables the design of perfect spin current diode, and highlights the importance of the chiral aspect in SWSC.

23 pages, 7 figures

References in corpus (11)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Dissipationless Quantum Spin Current at Room Temperature
• Spin Seebeck insulator
• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Direct observation of the Dzyaloshinskii-Moriya interaction in a Pt/Co/Ni film
• Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems
• Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction
• Formation and rotation of skyrmion crystal in the chiral-lattice insulator Cu2OSeO3
• Nonreciprocal magnon propagation in a noncentrosymmetric ferromagnet
• Spin Orbit Coupling and Spin Waves in Ultrathin Ferromagnets: The Spin Wave Rashba Effect
• Magnon spectrum of the helimagnetic insulator Cu2OSeO3

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• Magnetic texture based magnonics
• Nonreciprocal propagation of surface acoustic wave in Ni/LiNbO3
• Propagating spin excitations along skyrmion strings
• Phonon Magnetochiral Effect
• Effective gauge field theory of spintronics
• Emergent spin-valley-orbital physics by spontaneous parity breaking
• Spin-wave spectroscopy on Dzyaloshinskii-Moriya interaction in room-temperature chiral magnets hosting skyrmions
• Nonreciprocal Magnon by Symmetric Anisotropic Exchange Interaction in Honeycomb Antiferromagnet
• Band filling control of the Dzyaloshinskii-Moriya interaction in weakly ferromagnetic insulators
• Magnon dispersion shift in the induced-ferromagnetic phase of the noncentrosymmetric MnSi
• Low spin wave damping in the insulating chiral magnet Cu${}_2$OSeO${}_3$
• Helicity locking of square skyrmion crystal in a centrosymmetric lattice system without vertical mirror symmetry
• Nonreciprocal spin Seebeck effect in antiferromagnets
• Nonreciprocity of spin waves in noncollinear magnets due to the Dzyaloshinskii-Moriya interaction
• Microstructural-defect-induced Dzyaloshinskii-Moriya interaction
• Field dependence of non-reciprocal magnons in chiral MnSi
• Ballistic magnon heat conduction and possible Poiseuille flow in the helimagnetic insulator Cu${}_2$OSeO${}_3$
• Superconducting Diode Effects: Mechanisms, Materials and Applications
• Multifarious skyrmion phases on a trilayer triangular lattice
• Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions
• Extraction of Dzyaloshinksii-Moriya interaction from propagating spin waves validated
• Effect of Dzyaloshinski-Moriya interaction on spin-polarized neutron scattering
• Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu${}_2$OSeO${}_3$
• Nonreciprocal spin waves in a chiral antiferromagnet without the Dzyaloshinskii-Moriya interaction
• Theory of magnetoelastic resonance in a mono-axial chiral helimagnet
• Quantum plasmonic non-reciprocity in parity-violating magnets
• Ferromagnetic resonance with magnetic phase selectivity by means of resonant elastic x-ray scattering on a chiral magnet
• Essential model parameters for nonreciprocal magnons in multisublattice systems
• Nonreciprocal Transport in Noncoplanar Magnetic Systems without Spin-Orbit Coupling, Net Scalar Chirality, or Magnetization
• Optimizing propagating spin wave spectroscopy
• Nonreciprocal Phonon Propagation in a Metallic Chiral Magnet
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• Spin wave stiffness and damping in a frustrated chiral helimagnet Co${}_8$Zn${}_8$Mn${}_4$ as measured by small-angle neutron scattering
• Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction
• Indications for Dzyaloshinskii-Moriya Interaction at the Pd/Fe Interface Studied by \textit{In Situ} Polarized Neutron Reflectometry
• Kinetomagnetism of chirality and its applications
• In situ tuning of symmetry-breaking induced non-reciprocity in giant-Rashba semiconductor BiTeBr
• Room temperature realization of artificial chiral magnets with reprogrammable magnon nonreciprocity at zero field
• Universal spin wave damping in magnetic Weyl semimetals
• Nonreciprocal collective magnetostatic wave modes in geometrically asymmetric bilayer structure with nonmagnetic spacer
• Nonreciprocal charge transport in polar Dirac metals with tunable spin-valley coupling
• Magnetic order in nanoscale gyroid networks
• Surface pinning and triggered unwinding of skyrmions in a cubic chiral magnet
• Dzyaloshinskii-Moriya interaction in strongly spin-orbit-coupled systems: General formula and application to topological and Rashba materials
• Quantum information diode based on a magnonic crystal
• Dzyaloshinskii-Moriya interaction induced extrinsic linewidth broadening of ferromagnetic resonance
• Nonreciprocal Spin Waves in Nanoscale Domain Walls Detected by Scanning X-ray Microscopy in Perpendicular Magnetic Anisotropic Fe/Gd Multilayers
• Spontaneous chirality selection and nonreciprocal spin wave in breathing-kagome antiferromagnets at zero field
• Quantum Transport and Magnetism of Dirac Electrons in Solids
• Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields
• Switching of magnon parametric oscillation by magnetic field direction
• Ubiquity of the spin-orbit induced magnon nonreciprocity in ultrathin ferromagnets
• Nonreciprocal magnon excitations by the Dzyaloshinskii-Moriya interaction on the basis of bond magnetic toroidal multipoles
• Optical responses induced by spin gauge field at the second order
• Observation of acoustic magneto-chiral anisotropy in $\alpha$-quartz
• Stacking-dependent nonreciprocal transport in magnetic skyrmions