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- W2242524579 abstract "We develop a self-consistent theory for current-induced spin-wave excitations in normal metal-magnetic insulator bilayer structures. We compute the spin-wave dispersion and dissipation, including dipolar and exchange interactions in the magnet, the spin diffusion in the normal metal, as well as the surface anisotropy, spin-transfer torque, and spin pumping at the interface. We find that (1) the spin-transfer torque and spin pumping affect the surface modes more than the bulk modes; (2) spin pumping inhibits high-frequency spin-wave modes, thereby redshifting the excitation spectrum; (3) easy-axis surface anisotropy induces a new type of surface spin wave, which reduces the excitation threshold current and greatly enhances the excitation power. We propose that the magnetic insulator surface can be engineered to create spin-wave circuits utilizing surface spinwaves as information carriers." @default.
- W2242524579 created "2016-06-24" @default.
- W2242524579 creator A5044555677 @default.
- W2242524579 date "2014-03-03" @default.
- W2242524579 modified "2023-09-26" @default.
- W2242524579 title "Spin transfer torque excited spin-waves in metal--magnetic insulator bilayer" @default.
- W2242524579 hasPublicationYear "2014" @default.
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