Observation of the spin-based plasmonic effect in nanoscale structures

Details Observation of the spin-based plasmonic effect in nanoscale structures Observation of the spin-based plasmonic effect in nanoscale structures

2008-07-31

arxiv.org/abs/0807.5048v1

Y. Gorodetski, A. Niv, V. Kleiner and E. Hasman, Phys. Rev. Lett., 101, 043903 (2008)

Physics

Optics

17 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.101.043903

Observation of surface-plasmon phenomena that are dependent upon the handedness of the circularly polarized incident light (spin) is presented. The polarization-dependent near-field intensity distribution obtained in our experiment is attributed to the presence of a geometric phase arising from the interaction of light with an anisotropic and inhomogeneous nanoscale structure. A near-field vortex surface mode with a spin-dependent topological charge was obtained in a plasmonic microcavity. The remarkable phenomenon of polarization-sensitive focusing in a plasmonic structure was also demonstrated.

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