Microwave magnetochiral effect in Cu2OSeO3

Abstract

We theoretically find that in a multiferroic chiral magnet Cu2OSeO3, resonant magnetic excitations are coupled to collective oscillation of electric polarization, and thereby attain simultaneous activity to ac magnetic field and ac electric field. Because of interference between these magnetic and electric activation processes, this material hosts gigantic magnetochiral dichroism on microwaves, that is, the directional dichroism at gigahertz frequencies in Faraday geometry. The absorption intensity of microwave differs by as much as 30% depending on whether its propagation direction is parallel or antiparallel to the external magnetic field.

5 pages, 5 figures, accepted for publication in Physical Review Letters

References in corpus (13)

• Spin current and magneto-electric effect in non-collinear magnets
• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Skyrmions and Anomalous Hall Effect in a Dzyloshinskii-Moriya Spiral Magnet
• Dynamical magneto-electric coupling in helical magnets
• Magnetoelectric nature of skyrmions in a chiral magnetic insulator Cu2OSeO3
• Skyrmion Lattice in Two-Dimensional Chiral Magnet
• Four-coloured Spin-wave Excitations in Multiferroic Materials
• Coupling of phonons and electromagnons in GdMnO_3
• Symmetry Conditions for Non-reciprocal Light Propagation in Magnetic Crystals
• Magnetoelectric Resonances and Predicted Microwave Diode Effect of Skyrmion Crystal in Multiferroic Chiral-Lattice Magnet
• Ferrimagnetism of the magnetoelectric compound Cu${}_2$OSeO${}_3$ probed by ${}^{77}$Se NMR
• Terahertz time-domain spectroscopy of electromagnons in multiferroic perovskite manganites
• Magnetoelectric effects in single crystals of the cubic ferrimagnetic helimagnet Cu2OSeO3

Cited by in corpus (15)

• Skyrmions in Magnetic Multilayers
• Collective spin excitations of helices and magnetic skyrmions: review and perspectives of magnonics in non-centrosymmetric magnets
• Dynamical magnetoelectric phenomena of multiferroic skyrmions
• Nonreciprocal Magnon by Symmetric Anisotropic Exchange Interaction in Honeycomb Antiferromagnet
• Low spin wave damping in the insulating chiral magnet Cu${}_2$OSeO${}_3$
• Resonance modes and microwave driven translational motion of skyrmion crystal under an inclined magnetic field
• Field dependence of non-reciprocal magnons in chiral MnSi
• Skyrmion crystals in centrosymmetric triangular magnets under hexagonal and trigonal single-ion anisotropy
• Laser-controlled real- and reciprocal-space topology in multiferroic insulators
• Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu${}_2$OSeO${}_3$
• Essential model parameters for nonreciprocal magnons in multisublattice systems
• DC spinmotive force from microwave-active resonant dynamics of skyrmion crystal under a tilted magnetic field
• Selective Activation of an Isolated Magnetic Skyrmion in a Ferromagnet with Microwave Electric Fields
• Low energy magnon dynamics and magneto-optics of the skyrmionic Mott insulator Cu${}_2$OSeO${}_3$
• Nonreciprocal magnon excitations by the Dzyaloshinskii-Moriya interaction on the basis of bond magnetic toroidal multipoles