Fig. 3
From: Phonon-assisted oscillatory exciton dynamics in monolayer MoSe2
Scattering between K-valley electrons and LA(M) phonons. a Wavevectors of M-point phonons in a hexagonal Brillouin zone. b Phonon-mediated transitions of an electron between K and \(\bar Q\) valleys within the Brillouin zone. Here, three M-phonons are involved, with zero net change of electron k-vector. Blue- and red-shaded regions correspond to \(\bar Q\) and Q valleys, respectively. c Lowest conduction band and top valence band of monolayer MoSe2, with the \(\bar Q\) valley indicated. Upon the LA(M) phonon-mediated intervalley scattering of an electron between \(\bar Q\) and K valleys, the optically dark indirect exciton X0(M) can be interconverted with the optically bright exciton X0. Red and blue curves correspond to different spins
