DC spinmotive force from microwave-active resonant dynamics of skyrmion crystal under a tilted magnetic field
arXiv:1907.00621 · doi:10.1103/PhysRevB.100.014408
Abstract
We theoretically show that a temporally oscillating spin-driven electromotive force or voltage with a large DC component can be generated by exciting microwave-active spin-wave modes of a skyrmion crystal confined in a quasi two-dimensional magnet under a tilted magnetic field. The DC component and the AC amplitude of the oscillating electric voltage is significantly enhanced when the microwave frequency is tuned to an eigenfrequency of the peculiar spin-wave modes of the skyrmion crystal called ``rotation modes" and ``breathing mode", whereas the sign of the DC component depends on the microwave polarization and on the spin-wave mode. These results provide an efficient means to convert microwaves to a DC electric voltage by using skyrmion-hosting magnets and to switch the sign of the voltage via tuning the microwave frequency, which are important capabilities for spintronic devices.
9 pages, 7 figures. Accepted for publication in Physical Review B
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Cited by in corpus (7)
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- Dynamic Excitations of Chiral Magnetic Textures
- Dynamical Switching of Magnetic Topology in Microwave-Driven Itinerant Magnet
- Creation of nanometric magnetic skyrmions by global application of circularly polarized microwave magnetic field
- Thermoelectric effect of skyrmion crystal confined in a magnetic disk
- Spin waves in skyrmionic structures with various topological charges
- Soliton penetration from edges in a monoaxial chiral magnet