In collaboration with the Qiu group at Yale, we have posted a new paper on excitons in TMD heterostructures. Using time-resolved ARPES in combination with ab initio theory, we determine the mixture of excitons produced in MoSe2/WS2 bilayers after above-gap excitation at different twist angles.
Our results indicate a much more complicated, and richer, story than previously reported, involving lattice strain and a mixture of inter-layer and intra-layer excitons with different binding energies.