Magnetic excitations in Z<sub>2</sub> vortex crystals

ORAL

Abstract

Z2 vortex crystals have been recently shown to be realized in triangular Kitaev-Heisenberg systems [1,2]. These Z2 vortices are stablized by spin-orbit coupling introduced via the Kitaev term in the Hamiltonian. Here, we analyze the magnetic excitations of these Z2 vortex crystals and investigate the spin wave spectrum, energy gap and dynamical spin structure factor in terms of the interplay between the Kitaev and isotropic Heisenberg interaction [3].
[1] I. Rousochatzakis et al., PRB 93, 104417 (2016).
[2] M. Becker et al., PRB 91, 155135 (2015)
[3] M. Li, I. Rousochatzakis, N. B. Perkins, in preparation

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Presenters

  • Mengqun LI

    • School of Physics and Astronomy, University of Minnesota

Authors

  • Mengqun LI

    • School of Physics and Astronomy, University of Minnesota

  • Ioannis Rousochatzakis

    • School of Physics and Astronomy, Univ of Minn - Minneapolis
    • School of Physics and Astronomy, University of Minnesota

  • Natalia Perkins

    • Univ of Minnesota - Twin Cities
    • School of Physics and Astronomy, University of Minnesota-Twin cities
    • School of Physics and Astronomy, Univ of Minn - Minneapolis
    • School of Physics and Astronomy, University of Minnesota