Journal
NANO LETTERS
Volume 11, Issue 5, Pages 2038-2042Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl2004835
Keywords
Plasmonics; optical spin Hall effect; angular momentum; polarization
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Observation of optical spin Hall effects (OSHEs) manifested by a spin-dependent momentum redirection is presented. The effect occurring solely as a result of the curvature of the coupled localized plasmonic chain is regarded as the locally isotropic OSHE, while the locally anisotropic OSHE arises from the interaction between the optical spin and the local anisotropy of the plasmonic mode rotating along the chain. A wavefront phase dislocation was observed in a circular curvature, in which the dislocation strength was enhanced by the locally anisotropic effect.
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