title: Full control of the spin-wave damping in a magnetic insulator using spin-orbit torque.
abstract: It is demonstrated that the threshold current for damping compensation can be reached in a 5  μm diameter YIG(20  nm)|Pt(7  nm) disk. The demonstration rests upon the measurement of the ferromagnetic resonance linewidth as a function of I(dc) using a magnetic resonance force microscope (MRFM). It is shown that the magnetic losses of spin-wave modes existing in the magnetic insulator can be reduced or enhanced by at least a factor of 5 depending on the polarity and intensity of an in-plane dc current I(dc) flowing through the adjacent normal metal with strong spin-orbit interaction. Complete compensation of the damping of the fundamental mode by spin-orbit torque is reached for a current density of ∼3×10(11)  A·m(-2), in agreement with theoretical predictions. At this critical threshold the MRFM detects a small change of static magnetization, a behavior consistent with the onset of an auto-oscillation regime.
authors.affiliation: Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: A
authors.initials: A
authors.lastname: Hamadeh
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France.
authors.forename: O
authors.initials: O
authors.lastname: d'Allivy Kelly
authors.affiliation: Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: C
authors.initials: C
authors.lastname: Hahn
authors.affiliation: Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: H
authors.initials: H
authors.lastname: Meley
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France.
authors.forename: R
authors.initials: R
authors.lastname: Bernard
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France.
authors.forename: A H
authors.initials: AH
authors.lastname: Molpeceres
authors.affiliation: Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France and Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France and Institute of Physics, Kazan Federal University, Kazan 420008, Russian Federation.
authors.forename: V V
authors.initials: VV
authors.lastname: Naletov
authors.affiliation: Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: M
authors.initials: M
authors.lastname: Viret
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France.
authors.forename: A
authors.initials: A
authors.lastname: Anane
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France.
authors.forename: V
authors.initials: V
authors.lastname: Cros
authors.affiliation: Department of Physics, University of Muenster, 48149 Muenster, Germany and Institute of Metal Physics, Ural Division of RAS, Yekaterinburg 620041, Russia.
authors.forename: S O
authors.initials: SO
authors.lastname: Demokritov
authors.affiliation: Instituto de Sistemas Optoelectrónicos y Microtecnología (UPM), Madrid 28040, Spain.
authors.forename: J L
authors.initials: JL
authors.lastname: Prieto
authors.affiliation: Instituto de Microelectrónica de Madrid (CNM, CSIC), Madrid 28760, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Muñoz
authors.affiliation: Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: G
authors.initials: G
authors.lastname: de Loubens
authors.affiliation: Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France and SPINTEC, UMR CEA/CNRS/UJF-Grenoble 1/Grenoble-INP, INAC, 38054 Grenoble, France.
authors.forename: O
authors.initials: O
authors.lastname: Klein