Electrical spin-wave spectroscopy in nanoscale waveguides with nonuniform magnetization
arXiv:2101.11983 · doi:10.1063/5.0045806
Abstract
Spin waves modes in magnetic waveguides with width down to 320 nm have been studied by electrical propagating spin-wave spectroscopy and micromagnetic simulations for both longitudinal and transverse magnetic bias fields. For longitudinal bias fields, a 1.3 GHz wide spin-wave band was observed in agreement with analytical dispersion relations for uniform magnetization. However, transverse bias field led to several distinct bands, corresponding to different quantized width modes, with both negative and positive slopes. Micromagnetic simulations showed that, in this geometry, the magnetization was nonuniform and tilted due to the strong shape anisotropy of the waveguides. Simulations of the quantized spin-wave modes in such nonuniformly magnetized waveguides resulted in spin wave dispersion relations in good agreement with the experiments.
arXiv comment11 pages, 5 figures. This work has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No 801055 "Spin Wave Computing for Ultimately-Scaled Hybrid Low-Power Electronics" - CHIRON
References in corpus (12)
- An Introduction to Spin Wave Computing
- A magnonic directional coupler for integrated magnonic half-adders
- Integrated magnonic half-adder
- Experimental prototype of a spin-wave majority gate
- Non-Volatile Magnonic Logic Circuits Engineering
- Spin pinning and spin-wave dispersion in nanoscopic ferromagnetic waveguides
- Spin-wave propagation in ultra-thin YIG based waveguides
- Propagation of spin-waves packets in individual nano-sized yttrium iron garnet magnonic conduits
- Reconfigurable sub-micron spin-wave majority gate with electrical transducers
- All electrical propagating spin wave spectroscopy with broadband wavevector capability
- Backward volume vs Damon-Eshbach: a travelling spin wave spectroscopy comparison
- Excitation and propagation of spin waves in non-uniformly magnetized waveguides