Enhanced Superconductivity in Proximity to Peaks in Densities of States

At the same time, its formal derivation using a unitary transformation reveals that the electrons attract one another whenever their energies do not differ by more than the phonon energy ωD, independent of closeness to the Fermi energy. Consequently, the order parameter Δ becomes finite even away from the Fermi level.

This additional contribution to the order parameter is referred to as enhanced order. This dataset contains the data supporting these findings. The computed physical quantities include the order parameter Δ, the heat capacity CV, the critical temperature Tc, and the spectral functions A(ω) in the amplitude and phase channel.