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Competing interactions in the quasi-2D heavy fermion Ce<sub>2</sub>RhIn<sub>8</sub>

ORAL

Abstract

The heavy fermion family CenMIn3n+2 (M = Co, Rh, In with n = 1,2…∞) consists of n layers of CeIn3 stacked along the c-axis, with a spacer layer of MIn2. This allows for a discrete tuning of the electronic structure from quasi-2D (n = 1) to fully 3D (n = ∞). The n = 2 compound Ce2RhIn8 forms an important member of the family with intermediate dimensionality. Here, we use time-of-flight neutron scattering to probe the magnetic interactions in Ce2RhIn8 in order to probe the effect of reduced dimensionality on the magnetic coupling. We find a canted antiferromagnetic structure with a moment size comparable to what is seen for CeRhIn5. Furthermore, we find quasi-elastic scattering that may be the result of the competition between 2D and 3D characteristics.

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Presenters

  • Travis Williams

    Oak Ridge National Lab, Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge National Laboratory

Authors

  • Travis Williams

    Oak Ridge National Lab, Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge National Laboratory

  • Barry Winn

    Oak Ridge National Lab, Oak Ridge National Laboratory

  • Filip Ronning

    Los Alamos National Lab, Los Alamos National Laboratory, Los Alamos National laboratory, Condensed Matter and Magnet Science Group, Los Alamos National Laboratory

  • Eric D Bauer

    Los Alamos National Laboratory, Los Alamos National Lab, Los Alamos National laboratory, Los Alamos Natl Lab, Condensed Matter and Magnet Science Group, Los Alamos National Laboratory, Los Alamos National LAborator