Competing striped structures in La2CuO4+y

Abstract

High temperature superconductivity emerges in unique materials, like cuprates, that belong to the class of heterostructures at atomic limit, made of a superlattice of superconducting atomic layers intercalated by spacer layers. The physical properties of a strongly correlated electronic system, emerge from the competition between different phases with a resulting inhomogeneity from nanoscale to micron scale. Here we focus on the spatial arrangements of two types of structural defects in the cuprate La2CuO4+y : i) the local lattice distortions in the CuO2 active layers and ii) the lattice distortions around the charged chemical dopants in the spacer layers. We use a new advanced microscopy method: scanning nano X-ray diffraction (nXRD). We show here that local lattice distortions form incommensurate nanoscale ripples spatially anticorrelated with puddles of self-organized chemical dopants in the spacer layers.

9 pages, 3 figures, "Superstripes 2012" conference Erice 11-16 July 2012

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Cited by in corpus (6)

• Percolative superconductivity in La2CuO4.06 by lattice granularity patterns with scanning micro X-ray absorption near edge structure
• Evolution of Complexity in Out-of-Equilibrium Systems by Time-Resolved or Space-Resolved Synchrotron Radiation Techniques
• X-rays writing/reading of Charge Density Waves in the CuO2 plane of a simple cuprate superconductor
• Phase transitions to dipolar clusters and charge density waves in high Tc superconductors
• Dislocations as a boundary between charge density wave and oxygen rich phases in a cuprate high temperature superconductor
• The flux dynamics behavior of the two competing high temperature superconducting phases in underdoped LaCuO4.06