title: Spin-current nano-oscillator based on nonlocal spin injection.
abstract: Nonlocal spin injection has been recognized as an efficient mechanism for creation of pure spin currents not tied to the electrical charge transfer. Here we demonstrate experimentally that it can induce coherent magnetization dynamics, which can be utilized for the implementation of novel microwave nano-sources for spintronic and magnonic applications. We show that such sources exhibit a small oscillation linewidth and are tunable over a wide frequency range by the static magnetic field. Spatially resolved measurements of the dynamical magnetization indicate a relatively large oscillation area, resulting in a high stability of the oscillation with respect to thermal fluctuations. We propose a simple quasilinear dynamical model that reproduces well the oscillation characteristics.
authors.affiliation: Department of Physics and Center for Nonlinear Science, University of Muenster, 48149 Muenster, Germany.
authors.forename: V E
authors.initials: VE
authors.lastname: Demidov
authors.affiliation: Department of Physics, Emory University, Atlanta, GA, USA.
authors.forename: S
authors.initials: S
authors.lastname: Urazhdin
authors.affiliation: Department of Physics, Emory University, Atlanta, GA, USA.
authors.forename: A
authors.initials: A
authors.lastname: Zholud
authors.affiliation: 1] Department of Physics and Center for Nonlinear Science, University of Muenster, 48149 Muenster, Germany [2] Saratov State University, Saratov 410012, Russia.
authors.forename: A V
authors.initials: AV
authors.lastname: Sadovnikov
authors.affiliation: Department of Physics, Oakland University, Rochester, MI, USA.
authors.forename: A N
authors.initials: AN
authors.lastname: Slavin
authors.affiliation: 1] Department of Physics and Center for Nonlinear Science, University of Muenster, 48149 Muenster, Germany [2] Institute of Metal Physics, Ural Division of RAS, Yekaterinburg 620041, Russia.
authors.forename: S O
authors.initials: SO
authors.lastname: Demokritov