Magnon Pumping by a Time-Dependent Transverse Magnetic Field in Ferromagnetic Insulators

Abstract

The magnon pumping effect in ferromagnetic insulators under an external time-dependent transverse magnetic field is theoretically studied. Generation of a magnon current is discussed by calculating the magnon source term in the spin continuity equation. This term represents the non-conservation of magnons arising from an applied transverse magnetic field. The magnon source term has a resonance structure as a function of the angular frequency of the transverse field, and this fact is useful to enhance the pumping effect.

5 pages, 3 figures, added references, accepted for publication in J.Phys.Soc.Jpn

References in corpus (1)

• Microscopic approach to current-driven domain wall dynamics

Cited by in corpus (11)

• Josephson and Persistent Spin Currents in Bose-Einstein Condensates of Magnons
• Rectification of spin currents in spin chains
• Time-dependent spin-wave theory
• Consistent microscopic analysis of spin pumping effects
• Spin rectification in thermally driven XXZ spin chain via the spin-Seebeck effect
• Quantum spin pumping mediated by magnon
• Frequency dependent transport through a spin chain
• The temperature dependence of quantum spin pumping generated using electron spin resonance with three-magnon splittings
• Topological transverse spin transport in a canted antiferromagnet/heavy metal heterostructure
• A short note on spin pumping theory with Landau-Lifshitz-Gilbert equation under quantum fluctuation; necessity for quantization of localized spin
• Temperature dependence of spin currents in one- and three-dimensional insulators