Optical study of rival interactions in a d-electron ferromagnetic Kondo system

ORAL

Abstract

We report on a combined optical, transport and thermodynamic study of the Zintl compound Yb$_{14}$MnSb$_{11}$, demonstrating that it is the first ferromagnetic Kondo lattice in the underscreened limit. We suggest a scenerio whereby the combination of Kondo and Jahn-Teller effects provides a consistent explanation of both transport and optical data.

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Authors

  • Alex Schafgans

  • K.S. Burch

    • University of California, San Diego

  • N.P. Butch

  • M.B. Maple

    • University of California, San Diego

  • D. Mandrus

    • Oak Ridge National Laboratory

  • D.N. Basov

    • University of California, San Diego