Fig. 3: Hybrid moiré exciton lattice in the twisted MoTe2 homobilayer.
From: Förster valley-orbit coupling and topological lattice of hybrid moiré excitons
a Schematics of hybrid moiré excitons trapped at the B and C sites in t-MoTe2. Black (white) dots denote the electron (hole), and they are distributed in top (orange) and bottom (green) layer. The symbols of inter- and intra-layer configurations correspond to wavepackets of the form \(\vert {\psi }_{\tau ,m}^{{{{\rm{inter}}}}/{{{\rm{intra}}}}}({{{{\bf{r}}}}}_{c})\rangle ={\sum }_{{{{\bf{q}}}}}{e}^{-i{{{\bf{q}}}}\cdot {{{{\bf{r}}}}}_{c}}f(q){e}^{im{\varphi }_{q}}\vert {X}_{\tau ,{{{\bf{q}}}}}^{{{{\rm{inter}}}}/{{{\rm{intra}}}}}\rangle\), rc denoting wavepacket center, and this gauge choice leads to the rc-dependent phase factor in the linear superposition (see Supplementary Note 2). b Nearest-neighbor intravalley and intervalley Förster coupling between moiré exciton states at B and C site, which have p+ (p−) intralayer envelope at K(−K) valley. c Kinetic propagation amplitude as a function of moiré period. The inset shows the kinetic propagation as a next-nearest-neighbor complex hopping, τ = ±1 is the valley index.
