Pressure tuning of structure, superconductivity and novel magnetic order in the Ce-underdoped electron-doped cuprate T'-Pr_1.3-xLa_0.7Ce_xCuO_4 (x = 0.1)

POSTER

Abstract

High-pressure neutron powder diffraction, muon-spin rotation and magnetization studies of the structural, magnetic and the superconducting properties of the Ce-underdoped superconducting (SC) electron-doped cuprate system T'-Pr_1.3-xLa_0.7Ce_xCuO_4 with x = 0.1 are reported. A strong reduction of the lattice constants a and c is observed under pressure. However, no indication of any pressure induced phase transition from T' to T structure is observed up to the maximum applied pressure of p = 11 GPa. Large and non-linear increase of the short-range magnetic order temperature T_so in T'-Pr_1.3-xLa_0.7Ce_xCuO_4 (x = 0.1) was observed under pressure. Simultaneously pressure causes a non-linear decrease of the SC transition temperature T_c. All these experiments establish the short-range magnetic order as an intrinsic and a new competing phase in SC T'-Pr_1.2La_0.7Ce_0.1CuO_4. The observed pressure effects may be interpreted in terms of the improved nesting conditions through the reduction of the in-plane and out-of-plane lattice constants upon hydrostatic pressure.

Presenters

  • Zurab Guguchia

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institut
    • Princeton University
    • Columbia University
    • Brookhaven National Laboratory

Authors

  • Zurab Guguchia

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institut
    • Princeton University
    • Columbia University
    • Brookhaven National Laboratory

  • Tadashi Adachi

    • Department of Engineering and Applied Sciences, Sophia University

  • Zurab Shermadini

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

  • Johan Chang

    • Physics Institute, University of Zürich
    • Physics, University of Zurich
    • Physik-Institut, Universität Zürich

  • Emil Bozin

    • Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory

  • Fabian O Von Rohr

    • Department of Chemistry, University of Zürich

  • Antonio M. dos Santos

    • Oak Ridge National Laboratory
    • Quantum Condensed Matter Division, Oak Ridge National Laboratory

  • Jamie Molaison

    • Oak Ridge National Laboratory
    • Neutron Scattering Division, Oak Ridge National Laboratory

  • Reinhard Boehler

    • Carnegie Institution of Washington

  • Yoji Koike

    • Department of Applied Physics, Tohoku University

  • Jedrzej Wieteska

    • Columbia University
    • Physics, Columbia University
    • Department of Physics, Columbia University

  • Benjamin Frandsen

    • Brigham Young University
    • Physics and Astronomy, Brigham Young University

  • Elvezio Morenzoni

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute

  • Alex Amato

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute

  • Simon J L Billinge

    • Columbia University
    • Brookhaven National Laboratory

  • Yasutomo J Uemura

    • Columbia University
    • Department of Physics, Columbia University

  • Rustem Khasanov

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institut
    • Paul Scherrer Institute
    • Paul Sherrer Institut
    • PSI, 5232 Villigen, Switzerland