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

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.
Document type :
Journal articles
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01484755
Contributor : Dominique Girard <>
Submitted on : Tuesday, March 7, 2017 - 4:33:46 PM
Last modification on : Thursday, March 21, 2019 - 2:23:11 PM

Identifiers

Citation

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, American Institute of Physics, 2016, 108 (17), ⟨10.1063/1.4948252⟩. ⟨cea-01484755⟩

Share

Metrics

Record views

196