Fig. 6
Effect of an axial magnetic field. a Excitation energies, ε u R/γ, of low-lying excitons vs magnetic flux, ϕ/ϕ 0. Both first-principles (dots) and effective-mass (solid lines) data are reported. The black (blue) color labels the triplet (singlet) spin symmetry. The red line is the noninteracting gap and the dashed line is the instability threshold. b Square modulus of the wave function of the lowest exciton vs e–h distance along the axis, z, for increasing values of magnetic flux. Both ab initio (red lines) and effective-mass (blue lines) data are reported. c Total quasiparticle gap E g R/γ vs ϕ/ϕ 0. This observable may be accessed through Coulomb blockade spectroscopy. The red line is the noninteracting gap, E g,0
