Pseudogap state in superconductors: Extended Hartree approach to time-dependent Ginzburg-Landau theory
Pseudogap state in superconductors: Extended Hartree approach to time-dependent Ginzburg-Landau theory
It is well known that conventional pairing fluctuation theory at the Hartree level leads to a normal-state pseudogap in the fermionic spectrum. This pseudogap arises from bosonic degrees of freedom which appear at ${T}^{*},$ slightly above the superconducting transition temperature ${T}_{c}.$ Our goal is to extend this Hartree approximated scheme …