Allowing for real coherent phonon bursts to defend and actuate the superconducting state in YBCO

Assuming that BCS superconductivity is unstable for high transition temperatures, what would be required if real coherent phonon bursts formed to prevent (defend against) the complete collapse of this state when the superconducting gap fell to resonance with the low energy optical soft phonon mode? Could the resonant phonon bursts also establish (actuate) the high energy of the gap by requiring the gap formation energy at very low superconducting state density to be the soft optical phonon energy? For this treatment of the BCS gap as a population inversion to produce coherent phonons, the formation times would usually be enormous compared to the electron-defect scattering times. All defect interactions would need to be eliminated because they would be resonant with the phonon energy but differing in momentum. A model is presented in which chain site, out of CuO2 plane, oxygen atoms tend to mutually repel for nearest neighbor sites while attracting at second nearest neighbor, causes the depletion of chain oxygen in the vicinity of all defects. This forces the fermi level into the band gap near all defects and surfaces and allows the slow coherent phonon emission and superconducting ground state formation to occur.