APS Logo

Suppression of long range magnetic order accompanying structural transition in TbFeAs1-xPxO

ORAL

Abstract

We report the results of neutron scattering on powder samples of TbFeAs1-xPxO. Many pnictide superconductors share a ubiquitous set of traits in their parent compounds. The un-doped parent compounds exhibit a structural transition from tetragonal to orthohombic between ~100-200K related to an antiferromagnetic spin density wave ordering that is either concurrent with the structural transition or at a slightly lower temperature. We find no evidence through neutron diffraction of this magnetic order at typical length scales in the Tb-1111 system. The sensitivity of our measurements allows us to rule out ordered magnetic moments above 0.08 µB. Furthermore, suppression of the structural transition by isovalent doping of phosphorous onto the arsenic site has shown no evidence of inducing the common superconductivity seen with similar doping in related materials down to 1.8K.

–

Presenters

  • Ryan Stadel

    Physics, Northern Illinois University, Northern Illinois University

Authors

  • Ryan Stadel

    Physics, Northern Illinois University, Northern Illinois University

  • Dmitry Khalyavin

    Rutherford Appleton Laboratory, STFC, Rutherford Appleton Lab, ISIS, Rutherford Appleton Laboratory

  • Pascal Manuel

    Rutherford Appleton Lab, Rutherford Appleton Laboratory, STFC, Rutherford Appleton Lab, ISIS, Rutherford Appleton Laboratory, ISIS Pulsed Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, ISIS Facility, Rutherford Appleton Laboratory

  • Qiang Zhang

    Oak Ridge National Laboratory, SNS, Oak Ridge National Laboratory, Oak Ridge National Lab

  • Matthew Krogstad

    Materials Science Division, Argonne National Laboratory, Argonne National Laboratory, Materials Science Division, Argonne National Lab, Material Science, Argonne National Laboratory, Material Science Division, Argonne National Laboratory

  • Daniel Phelan

    Argonne National Laboratory, Materials Science Division, Argonne National Lab, Material Science, Argonne National Laboratory

  • Raymond Osborn

    Materials Science Division, Argonne National Laboratory, Argonne National Laboratory, Materials Science Division, Argonne National Lab, Materials Science, Argonne National Laboratory, Material Science, Argonne National Laboratory, Material Science Division, Argonne National Laboratory

  • Stephan Rosenkranz

    Materials Science Division, Argonne National Laboratory, Argonne National Laboratory, Materials Science Division, Argonne National Lab, Materials Science, Argonne National Laboratory, Material Science, Argonne National Laboratory, Material Science Division, Argonne National Laboratory

  • Omar Chmaissem

    Physics, Northern Illinois University, Physics, Northern Illinois University, Material Science Division, Argonne National Lab, Northern Illinois University, Physics (NIU) and Material Science Division (ANL), Northern Illinois University