Fig. 4: Spectral densities of electron–phonon coupling for axial divacancies.
From: Theory of the divacancy in 4H-SiC: impact of Jahn-Teller effect on optical properties
a Spectral densities \({S}_{{a}_{1}}(\hslash \omega )\) associated with a1-symmetry phonons of the 3E → 3A2 and b3A2 → 3E transitions. c Spectral densities of JT linear coupling K2(ℏω) associated with e-symmetry phonons of the 3E → 3A2 and d3A2 → 3E transitions. The spectral densities are for hh and kk divacancies. The total HR factor Stot and the total JT coupling \({K}_{{\rm{tot}}}^{2}\) are included in the panels. Results are for the (23 × 23 × 7) supercell with 29,622 atomic sites.
