On quantum critical destruction of the pseudogap phase

TL;DR

This paper analyzes the critical doping points in hole-doped cuprates where the pseudogap phase is destroyed, using a multiband model to understand the transition from pseudogap to a full Fermi surface.

Contribution

It introduces an original multiband model that accounts for doping effects and predicts two critical dopings for pseudogap destruction in cuprates.

Findings

Identification of two critical doping points for pseudogap destruction.

The first critical point corresponds to metallization of the sample.

Restoration of the full Fermi surface occurs between the two critical dopings.

Abstract

Recent data on the critical events accompanying the quenching of the pseudogap (PG) phase in hole-doped cuprates are analysed. An original multiband model with the spectrum influenced by doping has been used. Two critical dopings are expected in evolving of the PG to destruction. The first of them corresponds to metallization (antinodal) of the sample. Extended doping leads to a second critical point where the PG is lost. In between the restoration of the full Fermi surface proceeds. Band overlaps besides the location of the chemical potential ({\mu}) are decisive.