Itinerant Antiferromagnetism in the Fe-Pnictides

ORAL

Abstract

We propose a model for the itinerant antiferromagnetism in the Fe-pnictides and, as a test for it, calculate the magnetic phase diagram. The model includes kinetic energy for the five orbitals of Fe and local Hund's rule and repulsion. We also hope to derive a free energy for the model so as to calculate the fluctuation spectra and explain the remarkable universal temperature dependence of the susceptibility above T$_N$.

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Authors

  • Vladimir Cvetkovic

    • Department of Physics and Astronomy, University of California, Riverside, CA 92521
    • University of California, Riverside

  • Yan He

    • University of California Riverside
    • University of California, Riverside

  • Chandra Varma

    • University of California Riverside
    • Department of Physics and Astronomy, University of California at Riverside
    • University of California at Riverside
    • University of California, Riverside