Skyrmionic spin Seebeck effect via dissipative thermomagnonic torques

Abstract

We derive thermomagnonic torque and its "$\beta$-type" dissipative correction from the stochastic Landau-Lifshitz-Gilbert equation. The "$\beta$-type" dissipative correction describes viscous coupling between magnetic dynamics and magnonic current and it stems from spin mistracking of the magnetic order. We show that thermomagnonic torque is important for describing temperature gradient induced motion of skyrmions in helical magnets while dissipative correction plays an essential role in generating transverse Magnus force. We propose to detect such skyrmionic motion by employing the transverse spin Seebeck effect geometry.

5 pages, 1 figure In this version, an error in Eqs. (4), (5), and (6) have been corrected

References in corpus (9)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Spin Seebeck insulator
• Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
• Skyrmions and Anomalous Hall Effect in a Dzyloshinskii-Moriya Spiral Magnet
• Thermally Driven Ratchet Motion of Skyrmion Microcrystal and Topological Magnon Hall Effect
• Rotating skyrmion lattices by spin torques and field or temperature gradients
• Microscopic Calculation of Spin Torques in Disordered Ferromagnets
• Theory of current-driven magnetization dynamics in inhomogeneous ferromagnets
• Thermoelectric spin transfer in textured magnets

Cited by in corpus (18)

• Magnon-skyrmion scattering in chiral magnets
• Statics and Dynamics of Skyrmions Interacting with Pinning: A Review
• Quantized Transport for a Skyrmion Moving on a Two-Dimensional Periodic Substrate
• Emergent Geometric Frustration of Artificial Magnetic Skyrmion Crystals
• Unveiling domain wall dynamics of ferrimagnets in thermal magnon currents: competition of angular momentum transfer and entropic torque
• The dynamics of local magnetic moments induced by itinerant Weyl electrons
• Dynamics of magnon fluid in Dzyaloshinskii-Moriya magnet and its manifestation in magnon-Skyrmion scattering
• Thermally induced magnonic spin current, thermomagnonic torques and domain wall dynamics in the presence of Dzyaloshinskii-Moriya interaction
• Quantum field theory of topological spin dynamics
• Topical Review on Skyrmions and Hall Transport
• Field-driven skyrmion motion through velocity equipartition between skyrmions and a domain wall
• Skyrmion Echo in a system of interacting Skyrmions
• Equations of Motion and Frequency Dependence of Magnon-Induced Domain Wall Motion
• Magnetic Domain Wall Floating on a Spin Superfluid
• Magnetization pumping and dynamics in a Dzyaloshinskii-Moriya magnet
• Anatomy of spin wave driven magnetic texture motion via magnonic torques
• Motion-induced inertial effects and topological phase transitions in skyrmion transport
• Majorana bound states with chiral magnetic textures