Terahertz conductivity of a metal-organic hybrid Kagom\'e lattice: A candidate spin liquid

ORAL

Abstract

Recent theoretical studies predict that the optical conductivity of a spin liquid should exhibit power law behavior in frequency at low temperatures. Materials with the Kagom\'e structure are the most promising candidates for observing spin liquid behavior due to their high degree of magnetic frustration. We have measured the optical conductivity of Cu(1, 3-bdc), a spin-1/2 Kagom\'e lattice material, in the range 0.5 - 2 THz. We compare these results to the theoretical predictions and comment on the implications for the existence of a spin liquid state in this material.

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Authors

  • Daniel Pilon

    • MIT

  • Alex Frenzel

    • Massachusetts Institute of Technology / Harvard University
    • MIT

  • Danna Freedman

    • MIT

  • Daniel Nocera

    • MIT

  • Nuh Gedik

    • Massachusetts Institute of Technology
    • MIT
    • Department of Physics, MIT, Cambridge, MA 02139
    • Department of Physics, Massachusetts Institute of Technology, Cambridge MA 02139