Nonlocality in uniaxially polarizable media

Abstract

We reveal extraordinary electromagnetic properties for a general class of uniaxially polarizable media. Depending on parameters, such metamaterials may have wide range of nontrivial shapes of isofrequency contours including lemniscate, diamond and multiply connected curves with connectivity number reaching five. The possibility of the dispersion engineering paves a way to more flexible manipulation of electromagnetic waves. Employing first-principle considerations we prove that uniaxially polarizable media should be described in terms of the nonlocal permittivity tensor which by no means can be reduced to local permittivity and permeability even in the long-wavelength limit. We introduce an alternative set of local material parameters including quadrupole susceptibility capable to capture all of the second-order spatial dispersion effects.

submitted to Physical Review Letters; 5 pages, 5 figures

References in corpus (5)

• A unifying approach to left handed material design
• Nonlocal Homogenization Model for a Periodic Array of Epsilon-Negative Rods
• A negative permeability material at red light
• Resonant light interaction with plasmonic nanowire systems
• Strong Purcell effect in anisotropic $\epsilon$-near-zero metamaterials

Cited by in corpus (8)

• Magnetic hyperbolic optical metamaterials
• Boundary conditions for the effective-medium description of subwavelength multilayered structures
• Beyond local effective material properties for metamaterials
• Nonlocal homogenization for nonlinear metamaterials
• Retrieving effective material parameters of metamaterials characterized by nonlocal constitutive relations
• Concurrency of anisotropy and spatial dispersion in low refractive index dielectric composites
• Quadraxial metamaterial
• Effective Medium Perspective on Topological Transitions in Metamaterials