title: Dirac dynamics in one-dimensional graphene-like plasmonic crystals: pseudo-spin, chirality, and diffraction anomaly.
abstract: We introduce a new class of plasmonic crystals possessing graphene-like internal symmetries and Dirac-type spectrum in k-space. We study dynamics of surface plasmon polaritons supported in the plasmonic crystals by employing the formalism of Dirac dynamics for relativistic quantum particles. Through an analogy with graphene, we introduce a concept of pseudo-spin and chirality to indicate built-in symmetry of the plasmonic crystals near Dirac point. The surface plasmon polaritons with different pseudo-spin states are shown to split in the crystals into two beams, analogous to spin Hall effect.
authors.affiliation: Center for Integrated Nanotechnologies, Materials Physics & Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. sunghnam@gmail.com
authors.forename: Sung Hyun
authors.initials: SH
authors.lastname: Nam
authors.forename: Jiangfeng
authors.initials: J
authors.lastname: Zhou
authors.forename: Antoinette J
authors.initials: AJ
authors.lastname: Taylor
authors.forename: Anatoly
authors.initials: A
authors.lastname: Efimov