Spin fluctuations in the Kondo Semimetal CeRu4Sn6

ORAL

Abstract

We present neutron scattering results for CeRu4Sn6. Tentatively classified as one of the few non-cubic Kondo insulators, CeRu4Sn6 has highly anisotropic physical properties. Using cold neutron inelastic neutron scattering, we have identified a magnetic signal for $\hbar\omega < 1$ meV with a 4$f$ like form factor and Q-dependence that is indicative of anisotropic antiferromagnetic spin correlations.The implications for the classification and understanding of CeRu4Sn6 are discussed.

*The work at IQM was supported by the US Department of Energy, office of Basic Energy Sciences, Division of Material Sciences and Engineering under grant DE-FG02-08ER46544.

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Authors

  • Wesley Fuhrman

    • IQM, Johns Hopkins University

  • J. Haenel

    • Vienna University of Technology

  • A. Prokofiev

    • Vienna University of Technology

  • S. Paschen

    • Vienna University of Technology

  • D.T. Adroja

    • ISIS

  • J.A. Rodriguez-Rivera

    • NIST Center for Neutron Research
    • NIST

  • C.L. Broholm

    • Johns Hopkins University
    • Institute for Quantum Matter, Johns Hopkins University, and NIST Center for Neutron Research
    • IQM, NIST, Johns Hopkins University