Extended Data Fig. 3: Schematics of QX-to-DX transition at n = -1. | Nature Photonics

Extended Data Fig. 3: Schematics of QX-to-DX transition at n = -1.

From: Strong-interaction-driven quadrupolar-to-dipolar exciton transitions in a trilayer moiré superlattice

Extended Data Fig. 3

The pink and purple spheres refer to the optically excited hole and electrostatically introduced hole, respectively. (a) shows the exciton configuration as a QX for the doping of less than one hole per moiré unit cell. (b) and (c) show two competing exciton configurations when electrostatic doping at n = −1. Calculations in Supplementary Section 10 show that the configuration of (c) is of the lower energy.

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