Crystal Symmetry of Stripe Ordered La1.88Sr0.12CuO4

Abstract

We present a combined x-ray and neutron diffraction study of the stripe ordered superconductor \lscox{0.12}. The average crystal structure is consistent with the orthorhombic $Bmab$ space group as commonly reported in the literature. This structure however is not symmetry compatible with a second order phase transition into the stripe order phase, and, as we report here numerous Bragg peaks forbidden in the $Bmab$ space group are observed. We have studied and analysed these $Bmab$-forbidden Bragg reflections. Fitting of the diffraction intensities yields monoclinic lattice distortions that are symmetry consistent with charge stripe order.

7 pages, 3 figures, 5 Tables

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Cited by in corpus (8)

• Weak-signal extraction enabled by deep-neural-network denoising of diffraction data
• Tuning charge density wave order and structure via uniaxial stress in a stripe-ordered cuprate superconductor
• Designing the stripe-ordered cuprate phase diagram through uniaxial-stress
• Interplay between atomic fluctuations and charge density waves in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Tuning of Charge Order by Uniaxial Stress in a Cuprate Superconductor
• Engineering Phase Competition Between Stripe Order and Superconductivity in La${}_{1.88}$Sr${}_{0.12}$CuO${}_4$
• Pseudogap Suppression by Competition with Superconductivity in La-Based Cuprates
• Charge density waves and pinning by lattice anisotropy in 214 cuprates