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Magnetic control of a meta-molecule
Gavin B G Stenning1, Graham J Bowden, Lewis C Maple
1School of Physics and Astronomy, University of Southampton, SO17 1BJ, UK. gbgs1g09@soton.ac.uk
Optics Express
|February 8, 2013
Summary
This study explores the interaction between split ring resonators (SRRs) and yttrium iron garnet (YIG) thin films. The research reveals strong hybridized resonances and the creation of magnetostatic waves.
Area of Science:
- Condensed matter physics
- Materials science
- Electromagnetism
Background:
- Metamaterials enable novel properties through engineered meta-molecules.
- Composite meta-molecules with magnetic components offer advanced functionalities.
- Yttrium iron garnet (YIG) is a significant magnetic material for microwave applications.
Purpose of the Study:
- To investigate the interaction between a non-magnetic split ring resonator (SRR) and a YIG thin film.
- To characterize the resulting hybridized resonances.
- To explore the potential for creating elementary excitations.
Main Methods:
- Fabrication of a composite meta-molecule structure.
- Experimental measurement of electromagnetic response.
- Analysis of resonance coupling and excitation phenomena.
Main Results:
- Observed strong hybridized resonances between the SRR and YIG.
- Demonstrated strong coupling of YIG to the symmetric electric mode of the SRR.
- Identified the anti-crossing region as a source for backward volume magnetostatic waves.
Conclusions:
- The SRR-YIG system exhibits unique hybridized electromagnetic properties.
- This interaction facilitates the generation of magnetostatic waves.
- The findings open avenues for novel metamaterial applications in microwave physics.
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