Electronic structure of strongly correlated d-wave superconductors

TL;DR

This paper provides analytical insights into the electronic structure of strongly correlated d-wave superconductors, revealing doping-dependent behaviors of key electronic properties and comparing them with ARPES experiments.

Contribution

It introduces a combined renormalized mean field and matrix element calculation approach to analyze the electronic structure of Gutzwiller-projected d-wave superconductors.

Findings

Doping dependence of nodal Fermi velocity and Fermi wave vector

Non-monotonic doping behavior of spectral weight at antinodal points

Analytical expressions for energy dispersion and quasiparticle properties

Abstract

We study the electronic structure of a strongly correlated d-wave superconducting state. Combining a renormalized mean field theory with direct calculation of matrix elements, we obtain explicit analytical results for the nodal Fermi velocity, v_F, the Fermi wave vector, k_F, and the momentum distribution, n_k, as a function of hole doping in a Gutzwiller projected d-wave superconductor. We calculate the energy dispersion, E_k, and spectral weight of the Gutzwiller-Bogoliubov quasiparticles, and find that the spectral weight associated with the quasiparticle excitation at the antinodal point shows a non monotonic behavior as a function of doping. Results are compared to angle resolved photoemission spectroscopy (ARPES) of the high temperature superconductors.