Unidirectional Curved Surface Plasmon Polariton in a Radially Magnetized System

TL;DR

This paper introduces a novel method to generate unidirectional curved surface plasmon polaritons using radial magnetic bias, supported by a Greens function model, advancing control over plasmonic wave trajectories.

Contribution

It presents a new technique for creating unidirectional curved SPPs via radial magnetic bias and develops a Greens function model for radially-biased plasma.

Findings

Unidirectional curved SPPs can be excited with radial magnetic bias.

The Greens function model accurately describes radially-biased plasma.

Radial bias offers distinct properties compared to axial bias in SPP control.

Abstract

Dynamic manipulation of the surface plasmon polariton (SPP) and wave steering are important in plasmonic applications. In this work, we excite a curved SPP in topological continua by applying a radial magnetic bias. We believe that it is a new technique to create a unidirectional SPP traveling along a curved trajectory. We also derive a Greens function model for radially-biased plasma, applicable to curved SPPs. We compare the properties of unidirectional curved SPPs with the usual case when an axial bias is applied.