Enhanced spin wave propagation in magnonic rings by bias field modulation
Source abstract
Abstract
We simulate the spin wave (SW) dynamics in ring structures and obtain the ω − k dispersion relations corresponding to the output waveguide. Different bias field configurations affect the transfer of SW power from one arm of the structure to the other arm. To this end, we show that circular or radial bias fields are more suitable for energy transfer across the ring than the conventional horizontal bias field Hx. The SW dispersion shows that modes excited, when the bias field is along the ring radius, are almost 10 dB higher in power when compared to the modal power in the case of Hx. This is also corroborated by the SW energy density in the receiving stub.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic properties of thin films · Magnetic Properties and Applications · Physics of Superconductivity and Magnetism
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical Engineering, Indian Institute of Technology Madras 1 , Chennai 600036, India
Department of Physics, Indian Institute of Science 2 , Bangalore 560012, India
Engineering and the Environment, University of Southampton 3 , Southampton SO17 1BJ, United Kingdom
European XFEL GmbH 4 , Holzkoppel 4, 22869 Schenefeld, Germany
Funding
Department of Science and Technology, Ministry of Science and Technology · EC | Seventh Framework Programme
References (27)
Show source-provided references
1. The 2017 magnetism roadmap10.1088/1361-6463/aa81a1 ↗
2. Magnonics10.1088/0022-3727/43/26/264001 ↗
3. Switching behavior and novel stable states of magnetic hexagonal nanorings10.1016/j.jmmm.2016.11.103 ↗
4. Control of stable magnetization states in permalloy nanorings using magnetic nanowires10.1016/j.jmmm.2017.06.097 ↗
5. Spin wave modes in out-of-plane magnetized nanorings10.1103/physrevb.96.024446 ↗
6. Localized domain wall nucleation dynamics in asymmetric ferromagnetic rings revealed by direct time-resolved magnetic imaging10.1103/physrevb.94.024435 ↗
7. Switching by domain-wall automotion in asymmetric ferromagnetic rings10.1103/physrevapplied.7.044009 ↗
8. Spin-wave interference in microscopic rings10.1103/physrevlett.96.167207 ↗
9. Spin wave modes in out-of-plane magnetized nanorings10.1103/physrevb.96.024446 ↗
10. Magnonics: Experiment to prove the concept10.1016/j.jmmm.2006.02.242 ↗
11. Multiple ferromagnetic resonance in mesoscopic permalloy rings10.1063/1.1851932 ↗
12. Splitting of spin excitations in nanometric rings induced by a magnetic field10.1103/physrevlett.97.247203 ↗
13. Brillouin light scattering studies of confined spin waves: Linear and nonlinear confinement10.1016/s0370-1573(00)00116-2 ↗
14. Proposal for a standard micromagnetic problem: Spin wave dispersion in a magnonic waveguide10.1109/tmag.2012.2206820 ↗
15. 1999
16. Micromagnetic simulations of ferromagnetic rings10.1063/1.2832675 ↗
17. Micromagnetic calculation of dynamic susceptibility in ferromagnetic nanorings10.1063/1.3108537 ↗
18. Micromagnetic simulation of Fe asymmetric nanorings10.1016/j.jmmm.2011.09.001 ↗
19. The design and verification of MuMax310.1063/1.4899186 ↗
20. Nmag micromagnetic simulation tool: Software engineering lessons learned
21. A systematic approach to multiphysics extensions of finite-element-based micromagnetic simulations: Nmag10.1109/tmag.2007.893843 ↗
22. 1998
23. Absorbing boundary layers for spin wave micromagnetics10.1016/j.jmmm.2017.06.057 ↗
24. Gmsh: A 3-D finite element mesh generator with built-in pre- and post-processing facilities10.1002/nme.2579 ↗
25. Numerical calculation of spin wave dispersions in magnetic nanostructures10.1088/0022-3727/45/1/015001 ↗
26. Smoothing and differentiation of data by simplified least squares procedures10.1021/ac60214a047 ↗
27. Spin waves turning a corner10.1063/1.4738887 ↗