Exciton-Phonon Coupling and Band-Gap Renormalization in Monolayer WSe$_{2}$
Himani Mishra,
Anindya Bose,
Amit Dhar
et al.
Abstract:Using a fully ab-initio methodology, we demonstrate how the lattice vibrations couple with neutral excitons in monolayer WSe2 and contribute to the non-radiative excitonic lifetime. We show that only by treating the electron-electron and electron-phonon interactions at the same time it is possible to obtain an unprecedented agreement of the zero and finite-temperature optical gaps and absorption spectra with the experimental results. The bare energies were calculated by solving the Kohn-Sham equations, whereas… Show more
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