%0 Journal Article
%T Fast relaxation of photo-excited carriers in 2D transition metal dichalcogenides
%A Mark Danovich
%A Igor Aleiner
%A Neil D. Drummond
%A Vladimir Fal'ko
%J Physics
%D 2015
%I arXiv
%X We predict a fast relaxation of photo-excited carriers in monolayer transition metal dichalcogenides (TMDCs), which is mediated by the emission of longitudinal optical (LO) phonons. By evaluating Born effective charges for ${\rm MoS_2, MoSe_2,WS_2}$, and ${\rm WSe_2}$, we find that, due to the polar coupling of electrons with LO phonons, the relaxation times for hot electrons and holes are of the order of a few ps.
%U http://arxiv.org/abs/1510.06288v1