Nonthermal interacting-magnon dynamics in an optically driven 2D Heisenberg antiferromagnet

ORAL

Abstract

Recent theory results demonstrate a dynamical phase transition involving nonthermal magnon populations in the antiferromagnetic phase of the 2D Hubbard model upon laser driving [Walldorf et al., Phys. Rev. B 100, 121110(R) (2019)]. These results were obtained in a one loop non-interacting magnon theory. Here we present first steps towards a full interacting theory of this dynamical phase transition using a Dyson Maleev large Spin expansion and a Boltzmann formalism to investigate the effects of magnon-magnon interactions on the dynamical phase transition. The dynamical phase transition will be more completely characterized and implications for pump-probe experiments and ultrafast materials design of strongly correlated magnetism will be discussed.

*DFG Emmy Noether program SE 2558/2-1, US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering Grant No. DE SC0012375, the Flatiron Institute is a Division of the Simons Foundation, the Max Planck-New York Center for Nonequilibrium Quantum Phenomena

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Presenters

  • Mona Kalthoff

    • Physics, University of Hamburg
    • Max Planck Institute for the Structure and Dynamics of Matter

Authors

  • Mona Kalthoff

    • Physics, University of Hamburg
    • Max Planck Institute for the Structure and Dynamics of Matter

  • Dante Kennes

    • Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin
    • Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany
    • RWTH Aachen University
    • Institut fur Mathematische Physik, Technische Universitat Braunschweig
    • Institut für Theorie der Statistischen Physik, RWTH Aachen University

  • Andrew Millis

    • Columbia Univ
    • Center for Computational Quantum Physics, The Flatiron Institute
    • Columbia University
    • Physics, Columbia University
    • Department of Physics, Columbia University
    • Center for Computational Quantum Physics, Flatiron Institute
    • Department of Physics, Columbia University, Center for Computational Quantum Physics, Flatiron Institute
    • Physics/CCQ, Columbia University and Flatiron Institute

  • Michael Sentef

    • Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
    • Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany
    • Max Planck Inst Structure & Dynamics of Matter
    • Max Planck Institute for the Structure and Dynamics of Matter