Theory of drift-enabled control in nonlocal magnon transport
arXiv:2112.10819 · doi:10.1088/1361-648X/ac6d9a
Abstract
Electrically injected and detected nonlocal magnon transport has emerged as a versatile method for transporting spin as well as probing the spin excitations in a magnetic insulator. We examine the role of drift currents in this phenomenon as a method for controlling the magnon propagation length. Formulating a phenomenological description, we identify the essential requirements for existence of magnon drift. Guided by this insight, we examine magnetic field gradient, asymmetric contribution to dispersion, and temperature gradient as three representative mechanisms underlying a finite magnon drift velocity, finding temperature gradient to be particularly effective.
References in corpus (18)
- Spin Seebeck insulator
- Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
- Electronic measurement and control of spin transport in Silicon
- Theory of magnon-driven spin Seebeck effect
- Coherent spin transport through a 350-micron-thick Silicon wafer
- Magnon Mediated Electric Current Drag Across a Ferromagnetic Insulator Layer
- Spin convertance at magnetic interfaces
- Thermal spin dynamics of yttrium iron garnet
- Observation of spin current in quantum spin liquid
- Spin Insulatronics
- Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
- Chiral spin-wave velocities induced by all-garnet interfacial Dzyaloshinskii-Moriya interaction in ultrathin yttrium iron garnet films
- Spin Currents and Magnon Dynamics in Insulating Magnets
- Control of nonlocal magnon spin transport via magnon drift currents
- Generalized two-temperature model for coupled phonon-magnon diffusion
- Antiferromagnetic magnon pseudospin: Dynamics and diffusive transport
- Spin-Wave Doppler Shift by Magnon Drag in Magnetic Insulators
- Superfluid spin transport in magnetically ordered solids