Hole superconductivity xOr hot hydride superconductivity
From misperceptions in your comments, y'all need information on charge expulsion from a hole superconductor.
QuoteIt follows from Fig. 15 that the superconductor is characterized by having two different “chemical potentials.” The chemical potential 𝜇μ corresponds to the condensate, and 𝜇′=𝜇+𝜈μ′=μ+ν to the quasiparticle excitations. In a hole representation, 𝜇′>𝜇μ′>μ. In an electron representation, 𝜇>𝜇′μ>μ′. The pairs forming the condensate also have a smaller effective mass than the normal state carriers since the hopping amplitude increases from 𝑡t to 𝑡+Δ𝑡t+Δt upon pairing. The negatively charged condensate, by virtue of being a superfluid as well as because of its smaller effective mass is highly mobile, in contrast to the quasiparticles which experience normal scattering and have the higher effective mass characteristic of the normal state carriers. As a consequence, the condensate will have a tendency to move out of the bulk of the superconductor, so as to tend to equate the chemical potentials 𝜇μ and 𝜇′μ′ in the bulk.150 Because of overall charge neutrality, the negative charge will accumulate near the surface of the superconductor, giving rise to the qualitative charge distribution shown in Fig. 16. It looks like a “giant atom.”151
FIG. 16. Schematic picture of a spherical superconducting body. Negative charge is expelled from the bulk to the surface.
