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Doping-dependent competition between superconductivity and polycrystalline charge density waves

by S. Caprara, M. Grilli, J. Lorenzana, B. Leridon

Submission summary

As Contributors: Brigitte Leridon
Arxiv Link: https://arxiv.org/abs/1908.03408v2
Date submitted: 2019-10-07
Submitted by: Leridon, Brigitte
Submitted to: SciPost Physics
Domain(s): Experimental
Subject area: Condensed Matter Physics - Experiment

Abstract

From systematic analysis of the high pulsed magnetic field resistance data of La$_{2-x}$Sr$_x$CuO$_{4}$ thin films, we extract an experimental phase diagram for several doping values ranging from the very underdoped to the very overdoped regimes. Our analysis highlights a competition between charge density waves and superconductivity which is ubiquitous between x=0.08 and x=0.19 and produces the previously observed double step transition. When suppressed by a strong magnetic field, superconductivity is resilient for two specific doping ranges centered around respectively $x\approx 0.09$ and $x\approx 0.19$ and the characteristic temperature for the onset of the competing charge density wave phase is found to vanish above $x = 0.19$. At $x=1/8$ the two phases are found to coexist exactly at zero magnetic field.

Current status:
Editor-in-charge assigned

Submission & Refereeing History

Submission 1908.03408v2 on 7 October 2019

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