The Driving Force of Superconducting Transition in High Temperature Superconductors

TL;DR

This paper demonstrates that the superconducting transition in high temperature superconductors is driven by kinetic energy, based on optical data analysis of the t-J model, and suggests kinetic energy also influences the pseudogap phenomenon.

Contribution

It provides evidence that kinetic energy is the primary driver of superconductivity and the pseudogap in high temperature superconductors, using optical data analysis of the t-J model.

Findings

Superconducting transition is kinetic energy driven.

Exchange energy opposes the transition.

Kinetic energy may drive the pseudogap phenomenon.

Abstract

We show that both the kinetic energy and the exchange energy of the t-J model can be read off from the optical data. We show that the optical data indicates that the superconducting transition in high temperature superconductors is kinetic energy driven and the exchange energy resist the transition. We also show that kinetic energy may also be the driving force of the pseudogap phenomenon.