Fig. 3: Interlayer and intralayer exciton hybridization in natural trilayer WSe2.
From: Exciton Superposition across Moiré States in a Semiconducting Moiré Superlattice
a shows the electric field dependence of reflectance contrast spectra measured from natural trilayer WSe2 device (D2) plotted in log scale. b is the zoom-in of a in the region between 1.64 eV and 1.74 eV at negative electric fields plotted in linear scale. c is the zoom-in of a in the region between 1.64 eV and 1.74 eV at positive electric fields plotted in linear scale. The dashed red and blue lines show the fitting result of the hybridized excitonic states obtained by fitting the peak positions with a two-level hybridization model. The white and black dotted lines are the energies of unhybridized intralayer and interlayer excitons obtained from the fitting. d shows the schematics of the interlayer and intralayer excitons involved in the hybridization, both in real space and the band alignment configurations.
