Synchrotron X-ray diffraction study of a charge stripe order in 1/8-doped La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$

Abstract

Lattice distortions associated with charge stripe order in 1/8 hole-doped La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$ are studied using synchrotron X-ray diffraction for $x=0.05$ and $x=0.075$. The propagation wave vector and charge order correlation lengths are determined with a high accuracy, revealing that the oblique charge stripes in orthorhombic $x=0.075$ crystal are more disordered than the aligned stripes in tetragonal $x=0.05$ crystal. The twofold periodicity of lattice modulations along the c-axis is explained by long-range Coulomb interactions between holes on neighboring CuO${}_2$ planes.

arXiv comment4pages, 4figures, Submitted to PRB

References in corpus (7)

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• Charge order, superconductivity, and a global phase diagram of doped antiferromagnets
• Stripe order at low temperatures in La{2-x}Sr{x}NiO4 for 1/3 < x < 1/2
• Competition between charge/spin-density-wave orders and superconductivity in La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$
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• Relationship between charge stripe order and structural phase transitions in La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$
• Magnetic excitations in La-based cuprate superconductors: slave-boson mean-field analysis of the two-dimensional t-J model
• Magnetic field dependence of charge stripe order in La2-xBaxCuO4 (x~1/8)
• Prevailing charge order in overdoped cuprates beyond the superconducting dome
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• Effects of Superconductivity and Charge Order on the sub-Terahertz reflectivity of La${}_{1.875}$Ba${}_{0.125-y}$Sr${}_y$CuO${}_4$