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Title: Magnetoelectric control of spin currents

Abstract

The ability to control the spin current injection has been explored on a hybrid magnetoelectric system consisting of a (011)-cut ferroelectric lead magnesium niobate-lead titanate (PMNT) single crystal, a ferromagnetic FePt alloy, and a metallic Pt. With this PMNT/FePt/Pt structure we have been able to control the magnetic field position or the microwave excitation frequency at which the spin pumping phenomenon between FePt and Pt occurs. We demonstrate that the magnetoelectric heterostructure operating in the L-T (longitudinal magnetized-transverse polarized) mode couples the PMNT crystal to the magnetostrictive FePt/Pt bilayer, displaying a strong magnetoelectric coefficient of ∼140 Oe cm kV{sup −1}. Our results show that this mechanism can be effectively exploited as a tunable spin current intensity emitter and open the possibility to create an oscillating or a bistable switch to effectively manipulate spin currents.

Authors:
; ; ;  [1]
  1. Centro Atómico Bariloche, Instituto de Nanociencia y Nanotecnología (CNEA) and Conicet, 8400 Bariloche, Río Negro (Argentina)
Publication Date:
OSTI Identifier:
22590794
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 108; Journal Issue: 24; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALLOYS; ELECTRICAL PROPERTIES; FERROELECTRIC MATERIALS; LAYERS; LEAD; MAGNESIUM; MAGNETIC FIELDS; MAGNETOSTRICTION; MICROWAVE RADIATION; MONOCRYSTALS; NIOBATES; PUMPING; SPIN; TITANATES

Citation Formats

Gómez, J. E., Vargas, J. M., Avilés-Félix, L., and Butera, A.. Magnetoelectric control of spin currents. United States: N. p., 2016. Web. doi:10.1063/1.4954167.
Gómez, J. E., Vargas, J. M., Avilés-Félix, L., & Butera, A.. Magnetoelectric control of spin currents. United States. doi:10.1063/1.4954167.
Gómez, J. E., Vargas, J. M., Avilés-Félix, L., and Butera, A.. 2016. "Magnetoelectric control of spin currents". United States. doi:10.1063/1.4954167.
@article{osti_22590794,
title = {Magnetoelectric control of spin currents},
author = {Gómez, J. E. and Vargas, J. M. and Avilés-Félix, L. and Butera, A.},
abstractNote = {The ability to control the spin current injection has been explored on a hybrid magnetoelectric system consisting of a (011)-cut ferroelectric lead magnesium niobate-lead titanate (PMNT) single crystal, a ferromagnetic FePt alloy, and a metallic Pt. With this PMNT/FePt/Pt structure we have been able to control the magnetic field position or the microwave excitation frequency at which the spin pumping phenomenon between FePt and Pt occurs. We demonstrate that the magnetoelectric heterostructure operating in the L-T (longitudinal magnetized-transverse polarized) mode couples the PMNT crystal to the magnetostrictive FePt/Pt bilayer, displaying a strong magnetoelectric coefficient of ∼140 Oe cm kV{sup −1}. Our results show that this mechanism can be effectively exploited as a tunable spin current intensity emitter and open the possibility to create an oscillating or a bistable switch to effectively manipulate spin currents.},
doi = {10.1063/1.4954167},
journal = {Applied Physics Letters},
number = 24,
volume = 108,
place = {United States},
year = 2016,
month = 6
}
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