Underlying Pairing States of High $T_c$ Superconductivity

TL;DR

This paper introduces a microscopic theory for high-T_c superconductivity in cuprates, explaining how coherent pairing states can account for both antiferromagnetic order and d-wave superconductivity, unifying single electron and collective excitations.

Contribution

It proposes a novel microscopic framework based on coherent pairing states that simultaneously describes antiferromagnetic order and high-T_c superconductivity in cuprates.

Findings

Coherent pairing states include extended singlet and triplet pairs.

The theory accounts for both single electron properties and collective excitations.

Quantum fluctuations related to spin and charge can be analyzed within this framework.

Abstract

I present a microscopic theory I proposed recently to describe high-T_c superconductivity in cuprates. I show that coherent pairing states consisting of extended singlet Cooper pairs and triplet $\pi$ pairs can manifest both the Mott insulating antiferromagnetic order and the d-wave superconducting order. From this configuration of coherent pairing states, I can describe both the single electron properties and the low energy collective excitations in high T_c superconductivity in the same framework. The quasiparticle can be derived directly with respect to the coherent pairing states. While, the low-lying quantum fluctuations associated with spin-wave and charge excitation can be investigated from the path integral of the coherent pairing states.