Prerequisite for superconductivity: appropriate spin-charge correlations

TL;DR

This paper proposes that the key to superconductivity lies in the appropriate spin-charge correlations, supported by simple calculations and consistent with the unusual properties observed in superconductors.

Contribution

It introduces a mechanism emphasizing spin-charge correlations as essential for superconductivity, extending to a t-x model encompassing various superconducting and magnetic states.

Findings

Spin-charge correlation is crucial for superconductivity.

The proposed mechanism aligns with unusual superconductor properties.

Extended to a t-x model including diverse superconducting and magnetic phases.

Abstract

This work investigates the relation between superconductivity and correlations. A simple calculation shows that the appropriate spin-charge correlation is the key role to any superconductivity, and this calculation is consistent with the analyses of unusual properties of superconductors. (Note: the Tc of this model is not given clearly in this work, but we have advanced this mechanism to a t-x model which includes various superconductivities and magnetisms (please see arXiv:0707.3660 and following works).)