Scenario of Superconducting Transition for quasi-2D HTS

TL;DR

This paper explores the superconducting transition in quasi-2D high-temperature superconductors, emphasizing the role of spin fluctuations and interlayer coupling in the emergence of coherence.

Contribution

It presents a new scenario for the transition mechanism involving spin fluctuation pairing and interlayer coupling effects in quasi-2D HTS.

Findings

Spin fluctuations induce hole pairing in copper-oxide planes.

Superconducting regions form due to fluctuation spin waves.

Transition to coherent superconductivity depends on interlayer coupling strength.

Abstract

We discuss the scenario of superconducing transition for quasi two dimension HTS with spin fluctuation pairing mechanism. At mean field temperature of 2D superconducting transition the interaction of fluctuation spin waves with holes in copper-oxigen planes leads to the pairing of holes and to the fluctuation generation of superconducting regions, and also to the essential temperature dependence of the strength of the interlayer coupling. At decreasing temperature and sufficiently small interlayer coupling the transition of the sample to coherent superconducting state occurs.