Electrically-excited Motion of Topological Defects in Multiferroic Materials

Abstract

Topological magnetic defects in multiferroic materials acquire an electric charge or dipole moment due to the inverse Dzyaloshinskii-Moriya mechanism. This magnetoelectric coupling makes possible to excite large-amplitude collective motion of topological magnetic textures with an oscillating electric field. Here, I discuss electric excitation of a polar optical mode in a vortex-antivortex crystal and the electrically-induced spin precession in a magnetic skyrmion, which gives rise to rotation of skyrmions around each other and a translational motion of skyrmion-antiskyrmion pairs. The electric manipulation of magnetic topological defects in Mott insulators can find applications in magnetoelectric memory and logical devices.

arXiv comment9 pages, 7 figures

References in corpus (35)

• Skyrmion Lattice in a Chiral Magnet
• Spin current and magneto-electric effect in non-collinear magnets
• Topological Hall effect in the A-phase of MnSi
• Ferroelectricity in spiral magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Direct Observation of the Skyrmion Hall Effect
• Current-induced skyrmion dynamics in constricted geometries
• Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
• Multiple-q states and skyrmion lattice of the triangular-lattice Heisenberg antiferromagnet under magnetic fields
• Multiply periodic states and isolated skyrmions in an anisotropic frustrated magnet
• Topological Hall effect and Berry phase in magnetic nanostructures
• Distorted Perovskite with e_g^1 Configuration as a Frustrated Spin System
• Possible evidence for electromagnons in multiferroic manganites
• Crystal and Magnetic Structures in Layered, Transition Metal Dihalides and Trihalides
• Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites
• Unusual Hall Effect Anomaly in MnSi Under Pressure
• Skyrmion phase and competing magnetic orders on a breathing kagome lattice
• The 2020 Skyrmionics Roadmap
• Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet
• Thermally Driven Ratchet Motion of Skyrmion Microcrystal and Topological Magnon Hall Effect
• Dynamical magneto-electric coupling in helical magnets
• Magnetic structures and reorientation transitions in noncentrosymmetric uniaxial antiferromagnets
• Effective bilinear-biquadratic model for noncoplanar ordering in itinerant magnets
• Ferroelectricity induced by acentric spin-density waves in YMn${}_2$O${}_5$
• Electronic Orbital Currents and Polarization in Mott Insulators
• Bubble and Skyrmion Crystals in Frustrated Magnets with Easy-Axis Anisotropy
• Origin of electromagnon excitations in \textit{R}MnO${}_3$
• Giant directional dichroism of terahertz light in resonance with magnetic excitations of the multiferroic oxide BaCo${}_2$Ge${}_2$O${}_7$
• Bound states of skyrmions and merons near the Lifshitz point
• Edge states and skyrmion dynamics in nanostripes of frustrated magnets
• Emergent topological spin structures in a centrosymmetric cubic perovskite
• Multiple-Q Instability by (d-2)-dimensional Connections of Fermi Surfaces
• Helicoidal ordering in iron perovskites
• Linear Magnetoelectric Effect by Orbital Magnetism
• Incommensurate spiral order from double exchange interactions

Cited by in corpus (1)

• Spacetime magnetic hopfions: from internal excitations and braiding of skyrmions