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  • Mixed quantum–classical modeling of exciton–phonon scattering in solids: Application to optical linewidths of monolayer MoS2
Title: Mixed quantum–classical modeling of exciton–phonon scattering in solids: Application to optical linewidths of monolayer MoS2
We present a mixed quantum–classical framework for the microscopic and non-Markovian modeling of exciton–phonon scattering in solid-state materials and apply it to calculate the optical linewidths of monolayer MoS2. Within this framework, we combine reciprocal-space mixed quantum–classical dynamics with models for the quasiparticle band structure as well as the electron–hole and carrier–phonon interactions, parametrized against ab initio calculations, although noting that a direct interfacing with ab initio calculations is straightforward in principle. We introduce various parameters for truncating the Brillouin zone to select regions of interest. Variations of these parameters allow us to determine linewidths in the limit of asymptotic material sizes. The obtained asymptotic linewidths are found to agree favorably with experimental measurements across a range of temperatures. As such, our framework establishes itself as a promising route toward unraveling the non-Markovian and microscopic principles governing the nonadiabatic dynamics of solids.  more » « less
Award ID(s):
2145433
PAR ID:
10579107
Author(s) / Creator(s):
;
Publisher / Repository:
AIP Publishing
Date Published:
Journal Name:
The Journal of Chemical Physics
Volume:
161
Issue:
4
ISSN:
0021-9606
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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