Behaviour of superconductivity energetic characteristics in electron-doped cuprates. A simple model

TL;DR

This paper introduces a simple theoretical model to describe the phase diagram and energetic characteristics of electron-doped cuprate superconductors, capturing key features like transition temperatures and gap behaviors across doping levels.

Contribution

The work presents a novel, simplified model that explains the phase diagram and energetic properties of electron-doped cuprates, including the effects of doping on gaps and transition temperatures.

Findings

Maximal T_c occurs at overlapping band ensembles intersected by the chemical potential.

Doping quenches the normal state pseudogaps.

The model reproduces major features of the phase diagram.

Abstract

A simple model to describe the energetic phase diagram of electron-doped cuprate superconductor is developed. Interband pairing operates between the UHB and the defect states created by doping and supplied by both extincting HB-s. Two defect subbands correspond to the ($\pi, 0$) and ($\pi /2,\pi /2$) momentum regions. Extended doping quenches the bare normal state gaps (pseudogaps). Maximal transition temperature corresponds to overlapping bands ensemble intersected by the chemical potential. Illustrative results for $T_c$, pseudo- and superconducting gaps are calculated on the whole doping scale. Major characteristics features on the phase diagram are reproduced. Anticipated manifestation of gaps doping dynamics is discussed.