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CONDENSED MATTER
Effective influence of an electric current on brillouin spectra in the NiFe/IrMn structure
R. B. Morgunovab, M. V. Bakhmetievba, A. I. Chernovbc, A. B. Khutievad, A. V. Sadovnikovd a Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences,
Chernogolovka, Moscow region, 142432 Russia
b Russian Quantum Center, Skolkovo, Moscow, 121205 Russia
c Center of Photonics and Two-Dimensional Materials, Moscow Institute of Physics and Technology
(National Research University), Dolgoprudnyi, Moscow region, 141701 Russia
d Laboratory of Metamaterials, National Research Saratov State University, Saratov, 410012 Russia
Abstract:
When an electric current flows through the NiFe/IrMn structure, a significant redistribution of the intensities of the direct Stokes and inverse anti-Stokes lines in spectra of Brillouin scattering on thermal spin waves is observed. This is due to a change in the orientation of uniaxial anisotropy and the corresponding easy axis of the exchange shift under the action of the spin–orbit torque in the IrMn antiferromagnet, which in turn affects the dynamics of spin waves in the neighboring ferromagnetic NiFe layer. The detected effect indicates that spin-wave processes in a ferromagnet can be controlled by applying a spin current to change the magnetic anisotropy of the NiFe/IrMn interface.
Received: 09.12.2023 Revised: 26.12.2023 Accepted: 29.12.2023
Citation:
R. B. Morgunov, M. V. Bakhmetiev, A. I. Chernov, A. B. Khutieva, A. V. Sadovnikov, “Effective influence of an electric current on brillouin spectra in the NiFe/IrMn structure”, Pis'ma v Zh. Èksper. Teoret. Fiz., 119:4 (2024), 289–295; JETP Letters, 119:4 (2024), 299–304
Linking options:
https://www.mathnet.ru/eng/jetpl7160 https://www.mathnet.ru/eng/jetpl/v119/i4/p289
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