Extended Data Fig. 6: PL spectra at orthogonal polarization angles for Device 1 and Device 2.
From: Electrically tunable quantum confinement of neutral excitons
a, In Device 1, all discrete states show linear polarized states along the edge of the gate, with a high degree of linear polarization. b, In Device 2, the confinement is weaker owing to thicker h-BN spacer layers, which leads to the observation of both x-polarized and y-polarized states with a finite energy splitting δ of around 1 meV. The unmodified resonance at E − E2D of around 0.5 meV corresponds to the repulsive polaron emission from the region under the TG.
