Evolution of magnetic Dirac bosons in a Kagome lattice

ORAL

Abstract

We examine the magnetic properties and spin dynamics of Dirac nodes in a Heisenberg kagome lattice. Using linear spin theory, the phase diagrams and the evolution of exchange interactions in various magnetic configurations of the Kagome lattice are numerically calculated and produce spin waves that contain bosonic Dirac and Weyl points. Through the frustration of the magnetic geometry, we see a connection to the symmetry properties of the kagome lattice and the various antiferromagnetic configurations, where further study of external frustrations from a magnetic field, temperature, and anisotropy may reveal a controllability of the exchange interactions and nodal points.

*Institute for Materials Science at Los Alamos National Laboratory.

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Presenters

  • Daniel Boyko

    • University of North Florida

Authors

  • Daniel Boyko

    • University of North Florida

  • Alexander Balatsky

    • Nordita
    • Los Alamos National Laboratory
    • Nordic Institute for Theoretical Physics, Stockholm
    • Institute for Materials Science, Los Alamos National Laboratory
    • NORDITA
    • Nordic Institute for Theoretical Physics
    • Los Alamos National Laboratory, Institute for Materials Science
    • Institute for Material Science, Los Alamos National Laboratory
    • Department of Physics, University of Connecticut, Storrs, CT 06269, USA

  • Avadh Saxena

    • Los Alamos National Laboratory
    • Los Alamos National Laborary
    • Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • Theoretical Division - T4, Los Alamos National Laboratory

  • Jason Haraldsen

    • Department of Physics, University of North Florida
    • University of North Florida