Control of propagating spin waves via spin transfer torque in a metallic bilayer waveguide
Abstract
We investigate the effect of a direct current on propagating spin waves in a CoFeB/Ta bilayer structure. Using the micro-Brillouin light scattering technique, we observe that the spin-wave damping and amplitude may be attenuated or amplified depending on the direction of the current and the applied magnetic field. Our work suggests an effective approach for electrically controlling the propagation of spin waves in a magnetic waveguide and may be useful in a number of applications such as phase-locked nano-oscillators and hybrid information-processing devices. © 2014 American Physical Society.
Date Published
Journal
American Physical Society (APS)
Volume
89
Issue
14
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899709322&doi=10.1103%2fPhysRevB.89.140405&partnerID=40&md5=e9b2e2efdb7e27f314f118045fdac52c
DOI
10.1103/PhysRevB.89.140405
Research Area
Group (Lab)
Funding Source
DGE-0549417