  Plasmonics represents a unique approach to confine and enhance
electromagnetic radiation well below the diffraction limit, bringing a huge
potential for novel applications, for instance in energy harvesting,
optoelectronics, and nanoscale biochemistry. To achieve novel functionalities,
the combination of plasmonic properties with other material functions has
become increasingly attractive. In this Perspective, we review the current
state of the art, challenges, and future opportunities in nanoscale
magnetoplasmonics, an emerging area aiming to merge magnetism and plasmonics in
confined geometries to control either plasmons, electromagnetic-induced
collective electronic excitations, using magnetic properties, or magnetic
phenomena with plasmons. We begin by highlighting the cornerstones of the
history and principles of this research field. We then provide our vision of
its future development by showcasing raising research directions in
mid-infrared light-driven spintronics and novel materials for
magnetoplasmonics, such as transparent conductive oxides and hyperbolic
metamaterials. As well, we provide an overview of recent developments in
plasmon-driven magnetization dynamics, nanoscale optomagnetism and
acousto-magnetoplasmonics. We conclude by giving our personal vision of the
future of this thriving research field.
