I have done some reading on superconductance and understand that the reason it happens is due to the formation of Cooper pairs resulting from the attractive momentary charge concentration resulting from a phonon. (As a side-question, is that very different from London dispersion force or a temporary dipole in essence?)
What I don't understand is why an electron would cause a phonon to be produced resulting in a Cooper pair at 4 Kelvin but that same election wouldn't at 273 K.
Is this because Cooper pairs have relatively weak bonds? Is it just really energetically unfavorable to have these two electrons hanging out in a net-zero spin state? Does nature abhor electrons violating the Pauli exclusion principle?