Coexistence of magnetic order and superconductivity in RbEuFe4As4 according to high-resolution magnetic x-ray scattering studies

ORAL

Abstract

Superconductivity (SC) and the presence of ordered magnetic moments are in general antagonistic. Nonetheless, when a material is forced to accommodate these apparently incompatible order parameters it may exhibit subtle organization of these phases, in the form of "cryptomagnetism", FFLO, and spontaneous vortex states. In-depth experimental studies of such inhomogeneous phases have been rather challenging. Here we present a superconductor, RbEuFe4As4, with intertwined magnetic and superconducting properties ideally suited for magnetic x-ray scattering (MXS) studies. These diffraction studies revealed a long-range, fully coherent, and three-dimensionally ordered magnetic phase. This phase corresponds to a long-range order of Eu moments below the Néel temperature of ~15K. Magnetization measurements confirmed a full ionic moment of Eu coexisting with SC. MXS results of the magnetic structure, its correlation, and order parameter will be presented.

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Presenters

  • Zahirul Islam

    Argonne Natl Lab, X-ray Science Division, Argonne National Laboratory, Advanced Photon Source, Argonne National Laboratory, Argonne National Laboratory

Authors

  • Zahirul Islam

    Argonne Natl Lab, X-ray Science Division, Argonne National Laboratory, Advanced Photon Source, Argonne National Laboratory, Argonne National Laboratory

  • Kristin Willa

    Argonne Natl Lab, Materials Science Division, Argonne National Laboratory

  • Matthew Smylie

    Argonne Natl Lab, Materials Science Division, Argonne National Laboratory

  • Zhu Diao

    Department of Physics, Stockholm University, Physics and Electrical Engineering, Halmstad University

  • Andreas Rydh

    Department of Physics, Stockholm University

  • Jong Woo Kim

    Argonne National Laboratory, The Advanced Photon Source, Argonne National Laboratory, Advanced Photon Source, Argonne National Laboratory, Argonne National Labs

  • Jinke Bao

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

  • Duck Young Chung

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

  • Mercouri Kanatzidis

    Department of Chemistry, Northwestern University, Materials Science Division, Argonne National Laboratory, Northwestern Univ, Materials Science Division, Argonne Natl Lab, Northwestern University

  • Wai-Kwong Kwok

    Argonne National Lab., Materials Science Division, Argonne National laboratory, Argonne Natl Lab, Argonne National Laboratory, Materials Science Division, Argonne National Laboratory, Materials Science Division, Argonne National Lab, Material Science Division, Argonne National Laboratory

  • Ulrich Welp

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