Here we review the mechanism for going beyond this diffraction limit and discuss how manipulation of light by means of surface plasmons propagating along the metal surface can help to achieve this.

Interest in the semiconductor GaN is largely due to its large bandgap, which enables the generation of blue light. Surface plasmons have been used to enhance the emission from GaN-based LEDs ...

More information: Ziyun Wang et al, Suppressed Nonreciprocal Second-Harmonic Generation of Antiferromagnet MnPSe₃ in the MnPSe₃/Graphene Heterostructure Due to Interfacial Magnon–Plasmon ...