title: Hyperbolic Plasmons and Topological Transitions Over Uniaxial Metasurfaces.
abstract: We explore the unusual electromagnetic response of ultrathin anisotropic σ-near-zero uniaxial metasurfaces, demonstrating extreme topological transitions--from closed elliptical to open hyperbolic--for surface plasmon propagation, associated with a dramatic tailoring of the local density of states. The proposed metasurfaces may be implemented using nanostructured graphene monolayers and open unprecedented venues for extreme light confinement and unusual propagation and guidance, combined with large tunability via electric bias.
authors.affiliation: Department of Electrical and Computer Engineering, The University of Texas at Austin, 1616 Guadalupe Street, UTA 7.215, Austin, Texas 78701, USA.
authors.forename: J Sebastian
authors.initials: JS
authors.lastname: Gomez-Diaz
authors.affiliation: Department of Electrical and Computer Engineering, The University of Texas at Austin, 1616 Guadalupe Street, UTA 7.215, Austin, Texas 78701, USA.
authors.forename: Mykhailo
authors.initials: M
authors.lastname: Tymchenko
authors.affiliation: Department of Electrical and Computer Engineering, The University of Texas at Austin, 1616 Guadalupe Street, UTA 7.215, Austin, Texas 78701, USA.
authors.forename: Andrea
authors.initials: A
authors.lastname: Alù