From systematic analysis of the high pulsed magnetic field resistance data of La2−x Srx CuO4 thin films, we extract an experimental phase diagram for several doping values ranging from the very underdoped to the very overdoped regimes. Our analy- sis 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 ≈ 0.09 and x ≈ 0.19 and the characteristic temperature for the onset of the competing charge den- sity 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.

Doping-dependent competition between superconductivity and polycrystalline charge density waves / Caprara, Sergio; Grilli, Marco; José, Lorenzana; Leridon, Brigitte. - In: SCIPOST PHYSICS. - ISSN 2542-4653. - 8:(2020), pp. 1-18. [10.21468/SciPostPhys.8.1.003]

Doping-dependent competition between superconductivity and polycrystalline charge density waves

Sergio Caprara;Marco Grilli;José Lorenzana;
2020

Abstract

From systematic analysis of the high pulsed magnetic field resistance data of La2−x Srx CuO4 thin films, we extract an experimental phase diagram for several doping values ranging from the very underdoped to the very overdoped regimes. Our analy- sis 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 ≈ 0.09 and x ≈ 0.19 and the characteristic temperature for the onset of the competing charge den- sity 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.
2020
superconductivity; charge density waves; competing phases
01 Pubblicazione su rivista::01a Articolo in rivista
Doping-dependent competition between superconductivity and polycrystalline charge density waves / Caprara, Sergio; Grilli, Marco; José, Lorenzana; Leridon, Brigitte. - In: SCIPOST PHYSICS. - ISSN 2542-4653. - 8:(2020), pp. 1-18. [10.21468/SciPostPhys.8.1.003]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1437569
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