title: Phase-Lock Requirements in a Serial Array of Spin Transfer Nano-Oscillators.
abstract: The most promising approach to attain a narrow linewidth and a large output power simultaneously in spin torque oscillators is self-phase-locking of an array of oscillators. Two long range coupling mechanisms, magnetostatic interaction and self-induced current, are explored. Synchronization occurs with MR ratio ~ 14% and volume ~ 2.1 × 10(-5) μm(3) at room temperature for an experimental frequency dispersion, when only the self-induced microwave current is present. The dipole interaction decreases the MR ratio requirement when the elements are properly spaced.
authors.affiliation: School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors.forename: T
authors.initials: T
authors.lastname: Qu
authors.affiliation: 1] School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA [2] Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors.forename: R H
authors.initials: RH
authors.lastname: Victora