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@ARTICLE{PopovaGorelova:903628,
      author       = {Popova-Gorelova, Daria and Bringer, Andreas and Blügel,
                      Stefan},
      title        = {{H}eisenberg representation of nonthermal ultrafast laser
                      excitation of magnetic precessions},
      journal      = {Physical review / B},
      volume       = {104},
      number       = {22},
      issn         = {1098-0121},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2021-05277},
      pages        = {224418},
      year         = {2021},
      abstract     = {We derive the Heisenberg representation of the ultrafast
                      inverse Faraday effect that provides the time evolution of
                      magnetic vectors of a magnetic system during its interaction
                      with a laser pulse. We obtain a time-dependent effective
                      magnetic operator acting in the Hilbert space of the total
                      angular momentum that describes a process of nonthermal
                      excitation of magnetic precessions in an electronic system
                      by a circularly polarized laser pulse. The magnetic operator
                      separates the effect of the laser pulse on the magnetic
                      system from other magnetic interactions. The effective
                      magnetic operator provides the equations of motion of
                      magnetic vectors during the excitation by the laser. We show
                      that magnetization dynamics calculated with these equations
                      is equivalent to magnetization dynamics calculated with the
                      time-dependent Schrödinger equation, which takes into
                      account the interaction of an electronic system with the
                      electric field of light. We model and compare laser-induced
                      precessions of magnetic sublattices of the easy-plane and
                      easy-axis antiferromagnetic systems. Using these models, we
                      show how the ultrafast inverse Faraday effect induces a net
                      magnetic moment in antiferromagnets and demonstrate that a
                      crystal field environment and the exchange interaction play
                      essential roles for laser-induced magnetization dynamics
                      even during the action of a pump pulse. Using our approach,
                      we show that light-induced precessions can start even during
                      the action of the pump pulse with a duration several tens
                      times shorter than the period of induced precessions and
                      affect the position of magnetic vectors after the action of
                      the pump pulse.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
      pnm          = {5211 - Topological Matter (POF4-521)},
      pid          = {G:(DE-HGF)POF4-5211},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000753869800002},
      doi          = {10.1103/PhysRevB.104.224418},
      url          = {https://juser.fz-juelich.de/record/903628},
}