Rydberg excitons in core-shell nanostructures II. Plasmon-exciton interaction and enhancement

Abstract

Interaction between Rydberg excitons in core-shell Cu${}_2$O nanostructures and surface plasmons is investigated. An enhancement of a quadrupole transitions to the Rydberg exciton states in copper oxide plasmonic nanaostructures is examined. A possibility of a modification of plasmonic enhancment (i.e., an average amplification factor) of electric field distributions in the vicinity of nanostructures, which depends on its shape and geometrical size, is also discussed.

12 pages, 11 figures