Abstract
Local structure of the CuO 2 plane in Bi 2 Sr 2 CaCu 2 O 8+δ (Bi2212) superconductor has been solved by joint Cu K-edge extended X-ray absorption fine structure (EXAFS) and anomalous X-ray diffraction. The Cu-O pair distribution function (PDF) has been measured by EXAFS and diffraction. The displacement of the Cu ions along the c-axis shows largest amplitude and anharmonic character. The results show flat stripes of the CuO 2 lattice of width L = 15 + 0.5 A that are separated by stripes of bent CuO 2 plane. The modulation of the CuO 2 plane measured by EXAFS and anomalous diffraction has been discussed.
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