High-efficiency control of spin-wave propagation in ultra-thin yttrium iron garnet by the spin-orbit torque

M. Evelt; V. Demidov; V. Bessonov; O. Demokritov; J. Prieto; M. Muñoz; J. Ben Youssef; V. Naletov; G. de Loubens; O. Klein; M. Collet; K. Garcia-Hernandez; P. Bortolotti; V. Cros; A. Anane

High-efficiency control of spin-wave propagation in ultra-thin yttrium iron garnet by the spin-orbit torque

M. Evelt ¹ V. Demidov ¹ V. Bessonov O. Demokritov ¹ J. Prieto ² M. Muñoz ³ J. Ben Youssef ⁴ V. Naletov ⁵ G. de Loubens ⁵ O. Klein ⁶ M. Collet ⁷ K. Garcia-Hernandez ⁸ P. Bortolotti ⁹ V. Cros ⁸ A. Anane ⁸

1 WWU - Westfälische Wilhelms-Universität Münster

2 Instituto de Sistemas Optoelectrónicos y Microtecnología

3 Instituto Carlos I de Fisica Teorica y Computacional

4 LMB - Laboratoire de magnétisme de Bretagne

5 LNO - Laboratoire Nano-Magnétisme et Oxydes

SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay

6 SPEC - UMR3680 - Service de physique de l'état condensé

7 LPTMC - Laboratoire de Physique Théorique de la Matière Condensée

8 UMP CNRS/THALES - Unité mixte de physique CNRS/Thalès

9 Recherche translationelle relations hôte-pathogènes

Abstract : We study experimentally with submicrometer spatial resolution the propagation of spin waves in microscopic waveguides based on the nanometer-thick yttrium iron garnet and Pt layers. We demonstrate that by using the spin-orbit torque, the propagation length of the spin waves in such systems can be increased by nearly a factor of 10, which corresponds to the increase in the spin-wave intensity at the output of a 10 μm long transmission line by three orders of magnitude. We also show that, in the regime, where the magnetic damping is completely compensated by the spin-orbit torque, the spin-wave amplification is suppressed by the nonlinear scattering of the coherent spin waves from current-induced excitations.

Document type :

Journal articles

Domain :

Physics [physics]

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https://hal-cea.archives-ouvertes.fr/cea-01484755
Contributor : Dominique Girard <>
Submitted on : Tuesday, March 7, 2017 - 4:33:46 PM
Last modification on : Thursday, March 21, 2019 - 2:23:11 PM

High-efficiency control of spin-wave propagation in ultra-thin yttrium iron garnet by the spin-orbit torque

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High-efficiency control of spin-wave propagation in ultra-thin yttrium iron garnet by the spin-orbit torque

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