Toward Enhancing Chiro‐Optical and Magneto‐Optical Properties of Magnetic Nanocrystals by Surface Plasmons

Magneto-optics, a research area that studies the interaction betweenmagnetic fields and light, has recently made remarkable progress due to abetter understanding of light–matter interactions at the nanoscale. Theintegration of magnetic and plasmonic functionalities with nanometricresolution offers exciting opportunities, especially due to the ability ofplasmonic phenomena to enhance magneto-optical responses. In thisrespect, wet-chemistry methods are particularly useful in fine-tuning themagnetic and plasmonic properties of nanocrystals, enabling the creation of alarge library of hybrid colloidal systems with enhanced magneto-opticalfeatures. Here, recent advancements in these magnetoplasmonic hybridnanomaterials are explored and special focus on a key area of interest, that is,the nascent field of chiral plasmonics is put. Metal nanocrystals with intrinsicchiroptical features can lead to a combination of chiral plasmonics andmagneto-optics effects when interacting with the magnetic counterpart,paving the way toward the establishment of a systematic and comprehensiveroadmap for the predesign and fabrication of chiral magnetoplasmonicsystems. The implications of this progress are profound, offering bothfundamental insights and promising technological applications.