Figure 4
Schematic band structure showing: a typical electron band, a typical hole band, an electron band lying just above EF, the band structure in the absence of hybridization and with hybridization showing composite BCS-BEC superconductivity.
Similarly, a hole band lying just below EF and another possible route to BCS-BEC superconductivity. The black dashed lines show similarity to Dirac point dispersion (see also Fig. S1 for relation with band-structure calculations).
