Voltage-controlled surface plasmon-polaritons in double graphene layer structures

TL;DR

This paper investigates how bias voltage and spatial dispersion affect surface plasmon-polaritons in double graphene layers, revealing potential for tunable plasmonic modulators and shifts in spectral properties.

Contribution

It introduces the impact of bias voltage and spatial dispersion on plasmonic spectra in double graphene layers, highlighting their roles in device tuning.

Findings

Bias voltage shifts plasmon absorption edges.

Spatial dispersion raises the cutoff frequency.

Potential for efficient plasmonic modulators.

Abstract

We study the spectra and damping of surface plasmon-polaritons in double graphene layer structures. It is shown that application of bias voltage between layers shifts the edge of plasmon absorption associated with the interband transitions. This effect could be used in efficient plasmonic modulators. We reveal the influence of spatial dispersion of conductivity on plasmonic spectra and show that it results in the shift of cutoff frequency to the higher values.