Fig. 5: Tr-ARPES of monolayer WS2(ML WS2), monolayer MoSe2 (ML MoSe2), and twisted heterobilayers. | Nature Communications

Fig. 5: Tr-ARPES of monolayer WS2(ML WS2), monolayer MoSe2 (ML MoSe2), and twisted heterobilayers.

From: Moiré-controllable exciton localization and dynamics through spatially-modulated inter- and intralayer excitons in a MoSe2/WS2 heterobilayer

Fig. 5: Tr-ARPES of monolayer WS2(ML WS2), monolayer MoSe2 (ML MoSe2), and twisted heterobilayers.

a–f K-\(\Gamma\)-K slice constructed from tr-ARPES data set by summing all pump/probe delays 5 ps and longer. The signal above 1.3 eV is multiplied by the constant displayed to show the exciton signal within the band gap. A nonlinear color scale is used to make all features visible. Logarithmic and linear scale versions appear in the Supplemental Materials. Normalized intensity traces comparing the integrated exciton decay of the monolayer samples to heterobilayers with (g) small and (h) large relative twist angles. i Energy distribution curves (EDCs) of the exciton signal from the small twist angle bilayers with Gaussian fits. The fitted peak position shifts by 110\(\pm\)13 (statistical error) \(\pm\)42 (systematic error) meV upon permutation of the layer stack ordering.

Back to article page