An evidence of the three-dimensional superconductivity evolution through apical oxygen in YBCO

ORAL

Abstract

Superconductivity in the high-Tc cuprates originates from transport phenomena in their universal structural CuO2 plane. Meanwhile, the role of the apical oxygen which locates between CuO2 planes has brought significant attention. This is because the superconducting temperature (Tc) varies based on cuprates, even though they have the same CuO2 structure and doping. Here, we investigated the oxygen order at the Cu-O chain layer in YBa2Cu3O6.73 (YBCO), which is connected with CuO2 plane through the apical oxygen. For this purpose, we performed resonant soft x-ray scattering measurement around the Cu L3-edge. We found that the evolution of the three-dimensional (3D) superconductivity in YBCO is strongly correlated with the oxygen order. More details will be introduced in the presentation.

*All soft x-ray experiments were carried out at the SSRL (beamline 13-3), SLAC National Accelerator Laboratory, supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515.

–

Presenters

  • Hai Huang

    • SLAC - Natl Accelerator Lab

Authors

  • Hai Huang

    • SLAC - Natl Accelerator Lab

  • Sang Jun Lee

    • SLAC - Natl Accelerator Lab

  • Masaki Fujita

    • Institute for Materials Research, Tohoku University
    • IMR, Tohoku University
    • Tohoku University

  • Terukazu Nishizaki

    • Department of Electrical Engineering, Kyushu Sangyo University,

  • Chi-Chang Kao

    • SLAC - Natl Accelerator Lab

  • Jun-Sik Lee

    • SLAC - Natl Accelerator Lab
    • SSRL, SLAC National Accelerator Laboratory