Scanning micro X-ray diffraction unveils the distribution of oxygen chains nano-puddles in YBa2Cu3O6.33

Abstract

Oxygen chain fragments are known to appear at the insulator to superconductor transition (SIT) in YBa2Cu3O6+y. However the self organization and the size distribution of oxygen chain fragments is not known. Here we contribute to fill this gap, using scanning micro X ray diffraction which is a novel imaging method based on advances in focusing synchrotron radiation beam. This novel approach allows us to probe both real-space and k-space of a high-quality YBa2Cu3O6.33 single crystals with Tc=7K. We report compelling evidence for nanoscale striped puddles, with Ortho-II structure, made of chain fragments in the basal Cu(1) plane with local oxygen concentration 0.5. The size of the Ortho-II puddles spans a range between 2 and 9 nanometers. The real space imaging of Ortho-II puddles granular network shows that superconductivity, at low hole-doping regime, occurs in a network of nanoscale oxygen ordered patches, interspersed with oxygen depleted regions. The manipulation by thermal treatments of the striped Ortho II puddles has been investigated focusing on the spontaneous symmetry breaking near the order to disorder phase transition at 350 K.

6 pages, 5 Figures

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Cited by in corpus (26)

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• Fermi surface reconstruction of superoxygenated La${}_2$CuO${}_4$ with ordered oxygen interstitials
• Mapping Morphological and Structural Properties of Lead Halide Perovskites by Scanning Nanofocus XRD
• Shape Resonances in superconducting gaps in a 2DEG at oxide-oxide interface
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• Cu-NMR study of oxygen disorder in ortho-II YBa2Cu3Oy
• Direct Visualization of Spatial inhomogeneity of Spin Stripes Order in La1.72Sr0.28NiO4
• Superstripes : superconductivity in complex granular striped matter
• Functional Nanoscale Phase Separation and Intertwined Order in Quantum Complex Materials
• X-rays writing/reading of Charge Density Waves in the CuO2 plane of a simple cuprate superconductor
• Changes of statistical structural fluctuations unveils an early compacted degraded stage of PNS myelin
• Nanoscale inhomogeneity of charge density waves dynamics in La${}_{2-x}$Sr${}_x$NiO${}_4$
• Structural phase diagram of LaO1-xFxBiSSe: suppression of the structural phase transition by partial F substitutions
• Cuprate Twistronics for Quantum Hardware
• Multiple electronic components and Lifshitz transitions by oxygen wires formation in layered cuprates and nickelates
• Scale free distribution of oxygen interstitials wires in optimum doped HgBa${}_2$CuO${}_{4+y}$
• Electronic structure of HgBa${}_2$CuO${}_{4+\delta }$ with self-organized interstitial oxygen wires in the Hg spacer planes
• Lattice Quantum Geometry Controlling 118 K Multigap Superconductivity in Heavily Overdoped CuBa2Ca3Cu4O10+d
• Josephson coupling in Lanthanum-based cuprates superlattices
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• 2D nano-granularity of the oxygen chains in the YBa2Cu3O6.33 superconductor
• Gap fluctuations, Cooper pairs with finite center-of-mass momentum, and suppression of superconductivity in inhomogeneous systems with dopant superpuddles agglomerates