Magnetoplasmonics: Combining Magnetic and Plasmonic Functionalities

TLDR

Nanosystems that combine magnetic and plasmonic functionalities are an active research area, enabling magnetic control of plasmonic properties for active devices. This review surveys the current understanding of magnetoplasmonic structures where magnetism and plasmonics are intertwined. The review discusses how internal architecture enhances magneto‑optical activity through plasmonic field enhancement. Magnetoplasmonic materials are applied in gas and biosensing and in integrated photonic devices for telecommunications.

Abstract

Nanosystems with combined magnetic and plasmonic functionalities have in recent years become an active topic of research. By an adequate internal architecture of the constituting components, the magneto‐optical activity of these systems can be greatly increased due to the electromagnetic field enhancement associated with the plasmon resonance. Simultaneously, the magnetic functionality permits the control of the plasmonic properties by an external magnetic field, which allows the development of active plasmonic devices. These materials find applications in, for example, gas and biosensing areas, and in integrated photonic devices for telecommunications. In the present work the state of the art and current understanding of the phenomenology associated with magnetoplasmonic structures where magnetism and plasmonics are intertwined are reviewed.