Complementary response of static spin-stripe order and superconductivity to non-magnetic impurities and pressure in cuprates

POSTER

Abstract

Cuprate high-temperature superconductors (HTSs) have complex phase diagrams with multiple competing ordered phases. Understanding to which degree charge, spin, and superconducting orders compete or coexist is paramount for elucidating the microscopic pairing mechanism in the cuprate HTSs. In this talk, i will report some novel results of muon-spin rotation (µSR), neutron Scattering and magnetization experiments on non-magnetic Zn impurity and hydrostatic pressure effects on the static spin-stripe order and superconductivity in the La214 cuprates [1]. Remarkably, it was found that in these systems the spin-stripe ordering temperature Tso decreases linearly with Zn doping y and disappears at y ≈ 4%, demonstrating the high sensitivity of static spin-stripe order to impurities within a CuO2 plane. Moreover, Tso is suppressed in the same manner as the superconducting transition temperature Tc by Zn impurities. We also observed the same pressure evolution of both Tc and Tso in La2−xBaxCuO4, while there is an antagonistic pressure evolution of magnetic fraction and superfluid density. These results indicate that static spin-stripe order and SC pairing correlations develop in a cooperative fashion in La214 cuprates.

[1] Z. Guguchia et. al., PRB 94, 214511 (2016). PRL 119, 087002 (2017).

Presenters

  • Zurab Guguchia

    • Columbia Univ
    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Department of Physics, Columbia university

Authors

  • Zurab Guguchia

    • Columbia Univ
    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Department of Physics, Columbia university

  • Bertrand Roessli

    • Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute

  • Rustem Khasanov

    • Paul Scherrer Institute
    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute

  • Alex Amato

    • Paul Scherrer Institute
    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute

  • Ekaterina Pomjakushina

    • Laboratory for scientific developments and novel materials, Paul Scherrer Institute

  • Kazimierz Conder

    • Laboratory for scientific developments and novel materials, Paul Scherrer Institute
    • Paul Scherrer Institute

  • Yasutomo Uemura

    • Columbia Univ
    • Department of Physics, Columbia University
    • Columbia University
    • Department of Physics, Columbia university

  • John Tranquada

    • Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory
    • Condensed Matter Physics and Material Science Department, Brookhaven National Laboratory
    • Brookhaven National Laboratory
    • Condensed Matter &materials Science, Brookhaven Natl Lab
    • Brookhaven Natl Lab
    • Brookhaven Natl. Lab

  • Hugo Keller

    • Physik-Institut, Universität Zürich

  • Alexander Shengelaya

    • Tbislisi State University
    • Department of Physics, Tbilisi State University