Propagating-spin-wave spectroscopy using inductive antennas: Conditions for unidirectional energy flow
T. Devolder
Abstract
Spin waves are of central importance in spintronic as they determine the rate at which the magnetization can vary. They can be better studied by using propagating-spin-wave spectroscopy with a physically transparent model. This study of spin-wave transduction focuses on the interaction between spin waves and microwaves, and the impact of the spin-wave dispersion relation. The authors choose specific magnetization orientations so that the magnons and microwave photons do not couple, and show that line-shaped dispersion relations can be harnessed to engineer reconfigurable, nonreciprocal frequency filters transferring spin wave energy in a unidirectional manner.
Topics & Concepts
Spin waveDispersion relationSpintronicsMagnetizationPhysicsCondensed matter physicsMagnonMicrowaveSpin (aerodynamics)Dispersion (optics)Energy flowSpin polarizationSpectroscopyEnergy (signal processing)OpticsFerromagnetismQuantum mechanicsMagnetic fieldElectronThermodynamicsMagnetic properties of thin filmsQuantum and electron transport phenomenaPhysics of Superconductivity and Magnetism