Figure 3
Exciton energy bands (a) E1, (b) E2 and (c) E3 in the first Brillouin zone of a two-dimensional quantum-dot supercrystal with hexagonal Bravais lattice [see Fig. 1(e)]. [(d)–(h)] Modifications of exciton bands upon transformation of (e) hexagonal lattice to [(d) and (f)–(h)] c-rectangular lattices with q = 0.8, 1.2, 1.6 and 10 [q = b/a, see Fig. 1(e)]. Blue, red and green curves correspond to the first, second and third bands, respectively. Inset in (f) shows symmetry points and symmetry lines in the reciprocal space.
