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Updated: Dec 13, 2025

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Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
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Topologically-tuned spin Hall shift around Fano resonance
Optics Express
|August 6, 2020
Summary
We show how axion terms and surface plasmons can significantly enhance the weak topological magnetoelectric effect. This breakthrough could enable new applications in optical sensing and nanoprobing.
Area of Science:
- Photonics
- Condensed Matter Physics
- Nanotechnology
Background:
- The topological magnetoelectric effect, linked to photonic spin-orbit interaction, is typically weak due to the fine structure constant.
- Enhancing this effect is crucial for practical applications.
Purpose of the Study:
- To demonstrate manipulation of the spin Hall shift of light using the axion term.
- To investigate methods for significantly amplifying the topological magnetoelectric effect.
Main Methods:
- Theoretical analysis involving the axion term and Fano resonance.
- Numerical simulations of near-field and far-field scattering.
- Utilizing surface plasmon excitation near nanoparticle interfaces.
Main Results:
- The axion term effectively manipulates the spin Hall shift of light around Fano resonance.
- Excited surface plasmons enhance the topological magnetoelectric effect by several orders of magnitude.
- Numerical simulations confirm the theoretical predictions for both near-field and far-field scattering.
Conclusions:
- The proposed method significantly boosts the topological magnetoelectric effect.
- This enhancement opens possibilities for practical applications like optical sensing and nanoprobing.
- The study provides a pathway for utilizing enhanced topological magnetoelectric effects in nanodevices.
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