Title
Magnetoelectric tuning of the inverse spin-Hall effect
Date Issued
01 May 2017
Access level
open access
Resource Type
journal article
Author(s)
Vargas J.
Gómez J.
Butera A.
Centro Atómico Bariloche
Publisher(s)
American Institute of Physics Inc.
Abstract
We demonstrate in this article that the magnetoelectric (ME) mechanism can be exploited to control the spin current emitted in a spin pumping experiment using moderate electric fields. Spin currents were generated at the interface of a ferromagnet/metal bilayer by driving the system to the ferromagnetic resonance condition at X-Band (9.78 GHz) with an incident power of 200 mW. The ME structure, a thin (20 nm) FePt film grown on top of a polished 011-cut single crystal lead magnesium niobate-lead titanate (PMN-PT) slab, was prepared by dc magnetron sputtering. The PMN-PT/FePt was operated in the L-T mode (longitudinal magnetized-transverse polarized). This hybrid composite showed a large ME coefficient of 140 Oe cm/kV, allowing to easily tune the ferromagnetic resonance condition with electric field strengths below 4 kV/cm. A thin layer of Pt (10 nm) was grown on top of the PMN-PT/FePt structure and was used to generate and detect the spin current by taking advantage of its large spin-orbit coupling that produces a measurable signal via the inverse spin-Hall effect. These results proved an alternative way to tune the magnetic field at which the spin current is established and consequently the inverse spin-Hall effect signal, which can promote advances in hybrid spintronic devices.
Volume
7
Issue
5
Language
English
OCDE Knowledge area
Ingeniería de materiales Ingeniería eléctrica, Ingeniería electrónica
Scopus EID
2-s2.0-85009192332
Source
AIP Advances
ISSN of the container
21583226
Sponsor(s)
This work was supported in part by Conicet under Grant No. PIP 112-201101-00482, ANPCyT Grants No. PICT 2013-2363 and PICT 2013-0401, and U. N. Cuyo Grant No. 06/C421, all from Argentina
Sources of information: Directorio de Producción Científica Scopus