Fig. 5: The isofrequency contours and the spatial electric field distribution.
a The isofrequency contours of the surface plasmons on the RuOCl2 monolayer corresponding to the frequencies of 0.5, 1.5, and 2.0 eV. b–d The spatial distribution of electric field E of the surface plasmons excited by a z-directionally polarized dipole in a circular RuOCl2 monolayer with a radius of 100 nm and a thickness of 1 nm at \(\omega =\)0.5, 1.5, and 2.0 eV, respectively.
