Microscopic Model of Cuprate Superconductivity

摘要

We present a model for cuprate superconductivity based on the identificationof an experimentally detected "local superconductor" as a charge 2 fermionpairing in a circular, stationary density wave. This wave acts like a highlycorrelated local "boson" satisfying a modified Cooper problem with additionalcorrelation stabilization relative to the separate right- and left-handeddensity waves composing it. This local "boson" could be formed in a two-boundroton-like manner; it has Fermion statistics. Delocalized superconductivepairing (superconductivity) is achieved by a Feshbach resonance of two unpairedholes (electrons) resonating with a virtual energy level of the bound pairstate of the local "boson" as described by the Boson-Fermion-Gossamer (BFG)model. The spin-charge order interaction offers an explanation for the overallshape of the superconducting dome as well a microscopic basis for the cupratesuperconducting transition temperatures. An explanation of the correlation ofsuperconducting transition temperature with experimental inelastic neutron andelectron Raman scattering is proposed, based on the energy of the virtual boundpair. These and other modifications discussed suggest a microscopic explanationfor the entire cuprate superconductivity dome shape.