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