Measurements of the doping effects on the in-plane paraconductivity in cuprate superconductors

TL;DR

This paper investigates how doping influences in-plane paraconductivity in cuprate superconductors, revealing that superconducting fluctuations are independent of the pseudogap phenomenon in underdoped samples.

Contribution

It provides experimental measurements of doping effects on in-plane paraconductivity in La_{2-x}Sr_xCuO_4 thin films, clarifying the relationship between fluctuations and pseudogap.

Findings

Superconducting fluctuations are not linked to the pseudogap in underdoped cuprates.

Doping levels affect the magnitude of in-plane paraconductivity.

Results suggest separate origins for pseudogap and superconducting fluctuations.

Abstract

We will summarize here some of our measurements of the superconducting fluctuations effects on the in-plane electrical resistivity (the so-called in-plane paraconductivity) in La_{2-x}Sr_xCuO_4 thin films with different Sr content. Our results suggest that these superconducting fluctuations effects are not related to the opening of a pseudogap in the normal-state of underdoped compounds.