Complex magnetic phases in non-centrosymmetric heavy fermion CeCoGe3

ORAL

Abstract

The non-centrosymmetric nature of the tetragonal heavy fermion system CeCoGe3 has attracted much interest in the high pressure superconducting state of the material. We have explored the related ambient pressure magnetism using neutron scattering. There are three successive phase transitions at $T_{N1}\sim21$K , $T_{N2}\sim12 $K and $T_{N3}\sim8$K. The upper transition greatly enhances the susceptibility and there are meta-magnetic transitions in the lower T phases. We confirmed the previously determined AFM spin structure for $T_{N2}

*The work at IQM was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Material Sciences and Engineering, under Grant No. DEFG02-08ER46544.

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Authors

  • Shan Wu

    • Johns Hopkins University, Institute for Quantum Matter

  • Chris Stock

    • University of Edinburgh

  • Cedomir Petrovic

    • Brookhaven National Laboratory

  • J.A. Rodriguez-Rivera

    • NIST center for Neutron Research

  • Collin Broholm

    • Institute for Quantum Matter, Jonhs Hopkins University, and Quantum Condensed Matter Division, Oak Ridge National Laboratories
    • Johns Hopkins University
    • Institute for Quantum Matter and Johns Hopkins University
    • Johns Hopkins University, Institute for Quantum Matter
    • Johns Hopkins Univ