Figure 6.

The relation between particle density and Fermi energy. This displays the relation between particle density and Fermi energy in the quantum well for binding energy B = 1 eV, mass m = m_e = 511 keV/c², and −B ≤ E_F ≤6 eV. The red curve is the contribution from states bound inside the quantum well, the blue curve is the pure three-dimensional density of states in absence of a quantum well, and the black curve is n(E_F) according to Equations (36) and (37).