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arXiv · 2210.13603

Cut-offs and light-spin flips in surface plasmon resonance between a chiral medium and a metal

Hyoung-In Lee·Christopher Gaul
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Abstract

We have derived a dispersion relation governing the surface plasmon resonance established along a planar interface between a metal and a chiral medium (chiral case). Resulting numerical solutions are compared with the well-known results obtained for a metal-dielectric interface (achiral case). Comparisons show that the chiral case exhibits smaller phase speeds than the achiral case. Such a longitudinal deceleration in the chiral case is caused by the energy expended on establishing the longitudinal spin density, which turns out anti-symmetric with respect to medium chirality. Moreover, the low-frequency range is disallowed in the chiral case. Relevant energy redistributions, spin-orbital couplings, and applications are discussed.

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Hyoung-In Lee, Christopher Gaul. 2022-10-24. Cut-offs and light-spin flips in surface plasmon resonance between a chiral medium and a metal. https://arxiv.org/abs/2210.13603

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