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Optical study of interactions in a d-electron kondo lattice with ferromagnetism

  • Author(s): Burch, Kenneth S
  • Schafgans, A
  • Butch, N P
  • Sayles, T A
  • Maple, M B
  • Sales, B C
  • Mandrus, D
  • Basov, D N
  • et al.
Abstract

We report on a comprehensive optical, transport, and thermodynamic study of the Zintl compound Yb14MnSb11, demonstrating that it is the first ferromagnetic Kondo lattice compound in the underscreened limit. We propose a scenario whereby the combination of Kondo and Jahn-Teller effects provides a consistent explanation of both transport and optical data.

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