Abstract
Polarized Cu—K edge XAFS (X-ray absorption fine structure) on La2CuO4.1 indicate that the radial distribution function of the copper in plane oxygen pairs is a two-site distribution, in agreement with the results found by Bianconi et al. for temperatures below the appearance of a pseudogap. Additionally we find evidence of a change in this distribution across the superconducting transition, suggesting coupling between the local lattice structure and the charged particles involved in the superconductivity.
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Acosta-Alejandro, M., de León, J.M., Conradson, S.D. et al. Evidence for a Local Structural Change in La2CuO4.1 Across the Superconducting Transition. Journal of Superconductivity 15, 355–360 (2002). https://doi.org/10.1023/A:1021070113656
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DOI: https://doi.org/10.1023/A:1021070113656