Swift thermal steering of domain walls in ferromagnetic MnBi stripes

Abstract

We predict a fast domain wall (DW) motion induced by a thermal gradient across a nanoscopic ferromagnetic stripe of MnBi. The driving mechanism is an exchange torque fueled by magnon accumulation at the DWs. Depending on the thickness of the sample, both hot-to-cold and cold-to-hot DW motion directions are possible. The finding unveils an energy efficient way to manipulate DWs as an essential element in magnetic information processing such as racetrack memory.

References in corpus (20)

• The design and verification of Mumax3
• Spin Seebeck insulator
• Theory of Current-Driven Domain Wall Motion: A Poorman's Approach
• Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
• Theory of magnon-driven spin Seebeck effect
• Microscopic approach to current-driven domain wall dynamics
• All-magnonic spin-transfer torque and domain wall propagation
• Magnon-phonon coupling unmasked: a direct measurement of magnon temperature
• Thermomagnonic spin transfer and Peltier effects in insulating magnets
• Domain wall propagation through spin wave emission
• Magnetic anisotropic effects and electronic correlations in MnBi ferromagnet
• Propagation of Thermally Induced Magnonic Spin Currents
• A thermodynamic theory for thermal-gradient-driven domain wall motion
• Determination of exchange constants of Heusler compounds by Brillouin light scattering spectroscopy: application to Co${}_2$MnSi
• Angular and Linear Momentum of Excited Ferromagnets
• Domain wall heat conductance in ferromagnetic wires
• Fokker-Planck approach to the theory of magnon-driven spin Seebeck effect
• Thermodynamic Magnon Recoil for Domain Wall Motion
• On the longitudinal spin current induced by a temperature gradient in a ferromagnetic insulator
• Spectral characteristics of time resolved magnonic spin Seebeck effect

Cited by in corpus (4)

• Thermally induced magnonic spin current, thermomagnonic torques and domain wall dynamics in the presence of Dzyaloshinskii-Moriya interaction
• Thermoelastic enhancement of the magnonic spin Seebeck effect in thin films and bulk samples
• Energy repartition in the nonequilibrium steady state
• Electric control of emergent magnonic spin current and dynamic multiferroicity in magnetic insulators at finite temperatures