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arXiv · 2201.04858

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

Ruggero Frison·Julia Kuespert·Qisi Wang·Oleh Ivashko·Martin von Zimmermann·Martin Meven·Damian Bucher·Jakob Larsen·Christof Niedermayer·Marc Janoschek·Tohru Kurosawa·Naoki Momono·Migaku Oda·Niels Bech Christensen·Johan Chang
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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.

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Ruggero Frison, Julia Kuespert, Qisi Wang, Oleh Ivashko, Martin von Zimmermann, Martin Meven, Damian Bucher, Jakob Larsen, Christof Niedermayer, Marc Janoschek, Tohru Kurosawa, Naoki Momono, Migaku Oda, Niels Bech Christensen, Johan Chang. 2022-01-13. Crystal Symmetry of Stripe Ordered La1.88Sr0.12CuO4. https://doi.org/10.1103/physrevb.105.224113

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