Hedgehog spin-vortex crystal magnetic order in superconducting CaK(Fe1-xMx)4As4 (M=Co, Ni)

ORAL

Abstract

Antiferromagnetism in Fe-based superconductors is characterized by a pair of propagation vectors which may support a number of magnetic phases. Ni- and Co-doping in CaKFe4As4 suppresses superconductivity and stabilizes a new antiferromagnetic phase. Thermodynamic, transport, structural and local magnetic probes reveal this phase to be consistent with the hedgehog spin-vortex crystal. Ab initio calculations also indicate a preference for this non-collinear antiferromagnetism which is stabilized by the reduced symmetry of the CaKFe4As4 structure.
W. R. Meier et al., arXiv:1706.01067 (2017).

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Presenters

  • William Meier

    Iowa state university/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University/Ames Laboratory, Ames Laboratory and Iowa State University, Dept. of Physics and Astronomy, Dept. of Physics, Iowa State Univ, Ames Laboratory

Authors

  • William Meier

    Iowa state university/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University/Ames Laboratory, Ames Laboratory and Iowa State University, Dept. of Physics and Astronomy, Dept. of Physics, Iowa State Univ, Ames Laboratory

  • Q.-P. Ding

    Dept. of Physics, Iowa State Univ

  • Andreas Kreyssig

    Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Iowa State University, Ames Laboratory and Iowa State University, Dept. of Physics and Astronomy, Dept. of Physics, Iowa State Univ, Ames Lab

  • Sergey Bud'ko

    The Ames Laboratory, Iowa state university/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University/Ames Laboratory, Iowa State University / Ames Laboratory, Ames Laboratory and Iowa State University, Dept. of Physics and Astronomy, Dept. of Physics, Iowa State Univ, Ames Lab, Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University, Ames Laboratory, Department of Physics and Astronomy, Ames Laboratory and Iowa State University

  • Aashish Sapkota

    Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Dept. of Physics, Iowa State Univ

  • Karunakar Kothapalli

    Dept. of Physics, Iowa State Univ

  • Vladislav Borisov

    Institute of Theoretical Physics, Goethe University Frankfurt, Inst. Theoretical Physics, Goethe Univ. Frankfurt am Main

  • Roser Valenti

    Institute of Theoretical Physics, Goethe University Frankfurt, Inst. Theoretical Physics, Goethe Univ. Frankfurt am Main, Institut für Theoretische Physik, Goethe-Universität Frankfurt

  • Cristian Batista

    Department of Physics and Astronomy, Univ of Tennessee, Knoxville, Univ of Tennessee, Knoxville, Department of Physics and Astronomy, The University of Tennessee, University of Tennessee, Physics, University of Tennessee, The University of Tennessee, Department of Phys., Univ. of Tennessee, U. Tennessee, Knoxville, University of Tennessee, Knoxville

  • Peter Orth

    Dept. of Physics, Iowa State Univ

  • Rafael Fernandes

    School of Physics and Astronomy, University of Minnesota, School of Physics and Astronomy , University of Minnesota, School of Physics and Astronomy, Univ of Minnesota - Twin Cities, Univ of Minn - Minneapolis, School of Phys., Univ. of Minnesota - Minneapolis, University of Minnesota

  • Alan Goldman

    Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Iowa State University, Dept. of Physics, Iowa State Univ

  • Yuji Furukawa

    Dept. of Physics, Iowa State Univ, Department of Physics and Astronomy, Iowa State University

  • Anna Boehmer

    Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Iowa state university/Ames Laboratory, Institut fuer Festkoerperphysik, Karlsruhe Institute of Technology, Dept. of Physics, Iowa State Univ

  • Paul Canfield

    Ames Laboratory and Iowa State University, Ames Laboratory, Iowa State University, Department of Physics and Astronomy, Iowa State University, Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Iowa state university/Ames Laboratory, Ames Laboratory and Iowa State Univ, Iowa State University and Ames Laboratory, Iowa State University/Ames Laboratory, Iowa State University, Iowa State University / Ames Laboratory, Dept. of Physics, Iowa State Univ, Ames Lab, Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University, Iowa State Univ, Ames Laboratory, Department of Physics and Astronomy, Ames Laboratory and Iowa State University