F. Silly et al., Coupled plasmon modes in an ordered hexagonal monolayer of metal nanoparticles: A direct observation, PHYS REV L, 84(25), 2000, pp. 5840-5843
We report on the experimental observation of STM-induced photon emission in
ultrahigh vacuum on anetwork of 4-nm silver spheres. The spheres are rever
ed by a dielectric, electrically insulating, organic layer and deposited on
Au(lll). The bias-dependent spatial distribution of the photon emission ra
tes reveals the electric-field distribution of the different coupled plasmo
n modes in this model.