Mechanism of High-Tc Superconductivity Based Mainly on Tunneling Measurements in Cuprates

TL;DR

This paper reviews tunneling spectroscopy in cuprates, proposing that high-Tc superconductivity arises from topological excitations of Cooper pairs and phase coherence driven by spin fluctuations.

Contribution

It introduces a mechanism for high-Tc superconductivity based on tunneling data, emphasizing topological excitations and spin fluctuation-induced coherence.

Findings

Cooper pairs are topological excitations like bisolitons and breathers.

Phase coherence is mediated by spin fluctuations.

Tunneling spectroscopy supports the topological excitation model.

Abstract

The main purpose of this brief review is to present a sketch of the mechanism of high-Tc superconductivity based mainly on tunneling measurements in cuprates. In the review, we shall mostly discuss tunneling spectroscopy in Bi2212. Analysis of the data shows that the Cooper pairs in cuprates are topological excitations (e.g. quasi-one dimensional bisolitons, discrete breathers etc.), and the phase coherence among the Cooper pairs appears due to spin fluctuations.