Plasmon mediated inverse Faraday effect in a graphene–dielectric–metal structure

Abstract

This Letter shows the features of inverse Faraday effect (IFE) in a graphene-dielectric-metal (GDM) structure. The constants of propagation and attenuation of the surface plasmon-polariton modes are calculated. The effective magnetic field induced by surface plasmon modes in the dielectric due to the IFE is estimated to reach above 1 tesla. The possibility to control the distribution of the magnetic field by chemical potential of graphene is shown. The concept of strain-driven control of the IFE in the structure has been proposed and investigated.

Surface Plasmon-Mediated Nanoscale Localization of Laser-Driven sub-Terahertz Spin Dynamics in Magnetic Dielectrics

“…The sign of H y IFE , governed by the helicity of the light polarization in IFE, is now determined by the SPP propagation direction. Recently, a similar mechanism was discussed in other plasmonic systems 23,24 and was suggested to drive the nonlinear self-modulation of SPPs at magnetic interfaces. 25 These considerations are supported by the results of numerical simulations performed for the SPP excited at a model metal/ dielectric interface (see Supporting Information).…”

“…The sign of H y IFE , governed by the helicity of the light polarization in IFE, is now determined by the SPP propagation direction. Recently, a similar mechanism was discussed in other plasmonic systems , and was suggested to drive the nonlinear self-modulation of SPPs at magnetic interfaces …”

Driving Orbital Magnetism in Metallic Nanoparticles through Circularly Polarized Light: A Real-Time TDDFT Study

“…The plasmonic properties can be used to enhance and tailor the magnetic properties of matter at nanoscale thanks to the material-specific magneto-optical response. This has already been applied to all-optical magnetic switching in ferri- or ferromagnetic materials and graphene. − Surface plasmon polaritons were used for improving light-assisted magnetic switching mechanisms, , giving rise to the field of magneto-plasmonics. It has been shown that one of the possible pathways to enable fast all-optical switching is the inverse Faraday effect (IFE), ,,, which corresponds to a transfer of angular momentum from a circularly polarized laser field to the electronic system, leading to the creation of a static magnetization .…”