A New Class of $J_{eff}=1/2$ Mott Insulators

ORAL

Abstract

We predict a novel class of Jeff=1/2 Mott insulators in a family of Ir and Rh fluoride compounds with the K$_2$GeF$_6$ crystal structure that are previously synthesized, but not characterized extensively. First principles calculations in the level of all electron Density Functional Theory + Dynamical Mean Field Theory (DFT+DMFT) indicate that these compounds have large Mott gaps and some of them exhibit unprecedented proximity to the ideal, SU(2) symmetric Jeff=1/2 limit.

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Authors

  • Turan Birol

    Rutgers, The State University of New Jersey, Rutgers University

  • Kristjan Haule

    Rutgers University, Rutgers University, Piscataway, USA, Rutgers, The State University of New Jersey, Rutgers University, Piscataway, NJ, USA, Department of Physics, Rutgers University, Piscataway, New Jersey, USA, Rutgers Univ