Single domain stripe order in a high-temperature superconductor
Research on cuprate superconductors has converged to three major questions: (1) What is the nature of the pseudogap phase? (2) What is the mechanism behind the unconventional Cooper pairing? And (3) what is the symmetry of the competing density-wave states? The use of uniaxial pressure as an auxiliary tuning parameter can provide insight into some of these questions. Using x-ray diffraction, we have demonstrated very recently that uniaxial pressure induces unidirectional stripe order in La1.88Sr0.12CuO4 by lifting the in-plane rotational degeneracy. This raises the question whether the application of uniaxial pressure also leads to the selection of a single spin-density wave domain, providing direct evidence for a coupling between spin- and charge-density wave order. We aim to address this problem using neutron diffraction under compressive uniaxial pressure along one of the copper-oxygen bond directions. If the experiment is successful, we propose to study the low-energy spin excitations that couple to superconductivity in a followup study, which will provide novel insight into the competition between magnetism and unconventional superconductivity in the cuprates.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
CHANG Johan; BOURDAROT Frederic; N. B. Christensen; JANOSCHEK Marc; KUSPERT Julia; LE BOEUF David; MAZZONE Daniel Gabriel; SIMUTIS Gediminas and Qisi Wang. (2021). Single domain stripe order in a high-temperature superconductor. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.CRG-2807
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