Electromagnetic Scattering Laws in Weyl Systems
arXiv:1705.05059 · doi:10.1038/s41467-017-01533-0
Abstract
Wavelength determines the length scale of the cross section when electromagnetic waves are scattered by an electrically small object. The cross section diverges for resonant scattering, and diminishes for non-resonant scattering, when wavelength approaches infinity. This scattering law explains the color of the sky as well as the strength of a mobile phone signal. We show that such wavelength scaling comes from free space's conical dispersion at zero frequency. Emerging Weyl systems, offering similar dispersion at non-zero frequencies, lead to new laws of electromagnetic scattering that allow cross sections to be decoupled from the wavelength limit. Diverging and diminishing cross sections can be realized at any target wavelength in a Weyl system, providing unprecedented ability to tailor the strength of wave-matter interactions for radio-frequency and optical applications.
References in corpus (14)
- Weyl points and line nodes in gapless gyroid photonic crystals
- Directional emission of light from a nano-optical Yagi-Uda antenna
- Experimental observation of optical Weyl points
- Plasmon Weyl Degeneracies in Magnetized Plasma
- Hyperbolic Weyl point in reciprocal chiral metamaterial
- Weyl points in three-dimensional optical lattices: synthetic magnetic monopoles in momentum space
- Rare region effects dominate weakly disordered 3D Dirac points
- Dirty Weyl fermions: rare region effects near 3D Dirac points
- Topological photonic crystal with equifrequency Weyl points
- Type-II Weyl Points in Three-Dimensional Cold Atom Optical Lattices
- Radiation pattern of a classical dipole in a photonic crystal: photon focusing
- Electronic properties of disordered Weyl semimetals at charge neutrality
- Section Chern number for a 3D photonic crystal and the bulk-edge correspondence
- Quantum scattering theory of Fock states in high-dimensional spaces
Cited by in corpus (7)
- Topological Photonics
- Observation of non-Abelian nodal links in photonics
- Soft self-assembly of Weyl materials for light and sound
- Discovery of a maximally charged Weyl point
- Quasicrystalline Weyl points and dense Fermi-Bragg arcs
- Strong and long-range radiative interaction between resonant transitions
- Generating Weyl semimetals from alkali metals