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Updated: Jan 1, 2026
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
17.4K
Waveguide modes in Weyl semimetals with tilted dirac cones.
Optics Express
|December 25, 2019
Summary
We theoretically investigate electromagnetic waves in Weyl semimetal layers. Our study shows that localized guided waves can propagate, offering control over energy flow in novel waveguide designs.
Area of Science:
- Condensed Matter Physics
- Electromagnetism
- Materials Science
Background:
- Weyl semimetals are topological materials with unique electronic properties.
- Electromagnetic wave propagation in layered systems is crucial for device applications.
- Controlling light-matter interactions in nanostructures is an active research area.
Purpose of the Study:
- To theoretically investigate unattenuated electromagnetic guided wave modes in centrosymmetric Weyl semimetal layered systems.
- To derive dispersion relations for propagating modes in finite-sized Weyl semimetals.
- To explore the potential for designing Weyl semimetal waveguides with tunable energy flow.
Main Methods:
- Solving Maxwell's equations for electromagnetic fields.
- Applying appropriate boundary conditions for layered systems.
- Analyzing dispersion relations and energy transport velocity.
Main Results:
- Extremely localized guided waves can propagate along semimetal interfaces in ultrathin structures.
- Tunable epsilon-near-zero response arises from the anisotropic permittivity.
- Experimental regimes for high energy-density confinement were identified.
- Substantial slowdown of electromagnetic energy propagation near critical points was observed.
Conclusions:
- Weyl semimetal waveguides can offer efficient control over the velocity and direction of energy flow.
- The findings provide guidelines for designing advanced optical and electromagnetic devices.
- This research contributes to the understanding of light propagation in topological materials.
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