High-efficiency control of spin-wave propagation in ultra-thin yttrium iron garnet by the spin-orbit torque - Archive ouverte HAL Access content directly
Journal Articles Applied Physics Letters Year : 2016

High-efficiency control of spin-wave propagation in ultra-thin yttrium iron garnet by the spin-orbit torque

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Abstract

We study experimentally with submicrometer spatial resolution the propagation of spin waves in microscopic waveguides based on the nanometer-thick yttrium iron garnet and Pt layers. We demonstrate that by using the spin-orbit torque, the propagation length of the spin waves in such systems can be increased by nearly a factor of 10, which corresponds to the increase in the spin-wave intensity at the output of a 10 μm long transmission line by three orders of magnitude. We also show that, in the regime, where the magnetic damping is completely compensated by the spin-orbit torque, the spin-wave amplification is suppressed by the nonlinear scattering of the coherent spin waves from current-induced excitations.

Dates and versions

cea-01484755 , version 1 (07-03-2017)

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Cite

M. Evelt, V. Demidov, V. Bessonov, O. Demokritov, J. Prieto, et al.. High-efficiency control of spin-wave propagation in ultra-thin yttrium iron garnet by the spin-orbit torque. Applied Physics Letters, 2016, 108 (17), ⟨10.1063/1.4948252⟩. ⟨cea-01484755⟩
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