The modulated structure of the CuO2 plane in Bi2Sr2CaCu2O8+y superconductor has been solved by Cu K-edge anomalous x-ray diffraction. The displacement of Cu ions along the c axis shows the largest amplitude and anharmonic character. The results show flat stripes of CuO2 lattice of width L = 15.5 Angstrom with long Gu-Bi distances that are separated by stripes of bent CuO2 plane and shorter Cu-Bi distances. In each CuO2 bilayer the flat stripes in a first layer are close to the bent stripes in the second layer, suppressing the electronic coupling between the two adjacent planes.
Stripe Structure of the CuO2 Plane in Bi2Sr2CaCu2O8+y System by Anomalous X-ray Diffraction / Bianconi, Antonio; M., Lusignoli; Saini, Naurang Lal; P., Bordet; Kvick, ; P. G., Radaelli. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - STAMPA. - 54:(1996), p. 4310. [10.1103/PhysRevB.54.4310]
Stripe Structure of the CuO2 Plane in Bi2Sr2CaCu2O8+y System by Anomalous X-ray Diffraction
BIANCONI, Antonio;SAINI, Naurang Lal;
1996
Abstract
The modulated structure of the CuO2 plane in Bi2Sr2CaCu2O8+y superconductor has been solved by Cu K-edge anomalous x-ray diffraction. The displacement of Cu ions along the c axis shows the largest amplitude and anharmonic character. The results show flat stripes of CuO2 lattice of width L = 15.5 Angstrom with long Gu-Bi distances that are separated by stripes of bent CuO2 plane and shorter Cu-Bi distances. In each CuO2 bilayer the flat stripes in a first layer are close to the bent stripes in the second layer, suppressing the electronic coupling between the two adjacent planes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
