Magnon Straintronics: Reconfigurable Spin-Wave Routing in Strain-Controlled Bilateral Magnetic Stripes

A. V. Sadovnikov, A. A. Grachev, S. E. Sheshukova, Yu. P. Sharaevskii, A. A. Serdobintsev, D. M. Mitin, and S. A. Nikitov

Phys. Rev. Lett. 120, 257203 – Published 21 June 2018

Abstract

We observe and explain theoretically strain-induced spin-wave routing in the bilateral composite multilayer. By means of Brillouin light scattering and microwave spectroscopy, we study the spin-wave transport across three adjacent magnonic stripes, which are strain coupled to a piezoelectric layer. The strain may effectively induce voltage-controlled dipolar spin-wave interactions. We experimentally demonstrate the basic features of the voltage-controlled spin-wave switching. We show that the spin-wave characteristics can be tuned with an electrical field due to piezoelectricity and magnetostriction of the piezolayer and layered composite and mechanical coupling between them. Our experimental observations agree with numerical calculations.

Received 6 November 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.257203

Physics Subject Headings (PhySH)

Spin waves Strain Stress

Ferromagnets

Brillouin scattering & spectroscopy Ferromagnetic resonance Landau-Lifschitz-Gilbert equation Microwave techniques

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

A. V. Sadovnikov

Laboratory “Metamaterials,” Saratov State University, Saratov 410012, Russia and Kotel’nikov Institute of Radioengineering and Electronics, RAS, Moscow 125009, Russia

A. A. Grachev, S. E. Sheshukova, Yu. P. Sharaevskii, A. A. Serdobintsev, and D. M. Mitin³

Laboratory “Metamaterials,” Saratov State University, Saratov 410012, Russia

S. A. Nikitov

Laboratory “Metamaterials,” Saratov State University, Saratov 410012, Russia and Kotel’nikov Institute of Radioengineering and Electronics, RAS, Moscow 125009, Russia