Magnetization pumping and dynamics in a Dzyaloshinskii-Moriya magnet
arXiv:1409.2846 · doi:10.1209/0295-5075/109/67008
Abstract
We formulate a phenomenological description of thin ferromagnetic layers with inversion asymmetry where the single-domain magnetic dynamics experiences magnon current-induced torques and leads to magnon-motive forces. We first construct a phenomenological theory based on irreversible thermodynamics, taking into account the symmetries of the system. Furthermore, we confirm that these effects originate from Dzyaloshinskii-Moriya interactions from the analysis based on the stochastic Landau-Lifshitz-Gilbert equation. Our phenomenological results generalize to a general form of Dzyaloshinskii-Moriya interactions and to other systems, such as pyrochlore crystals and chiral magnets. Possible applications include spin current generation, magnetization reversal and magnonic cooling.
6 pages and 1 figure
References in corpus (11)
- Spin Seebeck insulator
- Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
- Observation of the Magnon Hall Effect
- Theory of magnon-driven spin Seebeck effect
- Theoretical prediction of rotating magnon wavepacket in ferromagnets
- Thermal Spin-Transfer Torques in Magnetoelectronic Devices
- Thermo-spin effects in a quantum dot connected to ferromagnetic leads
- Spin Orbit Coupling and Spin Waves in Ultrathin Ferromagnets: The Spin Wave Rashba Effect
- Skyrmionic spin Seebeck effect via dissipative thermomagnonic torques
- Spin Hall phenomenology of magnetic dynamics
- Thermoelectric spin transfer in textured magnets