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@PHDTHESIS{Popova:154130,
      author       = {Popova, Daria},
      title        = {{M}icroscopic description of the inverse {F}araday effect
                      at subpicosecond time scales},
      volume       = {83},
      school       = {RWTH Aachen},
      type         = {Dr.},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2014-03524},
      isbn         = {978-3-89336-962-1},
      series       = {Schriften des Forschungszentrums Jülich. Reihe
                      Schlüsseltechnologien / Key Technologies},
      pages        = {183 S.},
      year         = {2014},
      note         = {RWTH Aachen, Diss., 2013},
      abstract     = {This Thesis is devoted to the microscopic study of the
                      inverse Faraday effect at subpicosecond time scales. The
                      inverse Faraday effect (IFE) is a magnetooptical process,
                      which leads to the generation of magnetization by circular
                      polarized light. Ultrafast manipulation of spin dynamics is
                      of highly importance for the development of novel concepts
                      of information processing and data storage. Therefore, the
                      IFE, which provides the possibility to non-thermally and
                      coherently induce and control magnetization dynamics at
                      femtosecond time scales, gained much significance in recent
                      years. However, despite its relevance for technological
                      applications, the origin of this effect is still poorly
                      understood. A theoretical description for the IFE induced by
                      stationary laser light was developed in 1960’ies
                      considering the experimental conditions available at that
                      time. However, the laser technology moved forward
                      dramatically in the last fifty years. Magneto-optical
                      experiments nowadays are performed by laser pulses of
                      several tens of femtoseconds duration, which is five orders
                      of magnitude faster than that half century ago. This leads
                      to principally new physics of laser induced magnetic
                      processes, which requires novel theoretical approaches for
                      their interpretation. It is shown here in detail that the
                      mechanisms of magnetization changes due to the IFE triggered
                      by ultrashort laser pulses is quite different from that by
                      stationary excitation. A new theoretical approach based on
                      the solution of the time-dependent Schrödinger equation is
                      provided in this Thesis. It allows to describe magnetization
                      time evolution triggered by circularly-polarized laser
                      pulses at subpicosecond time scales. It is shown that the
                      ultrafast IFE consists of two processes: the stimulated
                      Raman scattering, which leads to the change of a system’s
                      magnetic state, and the excitation of magnetization
                      precession due to the deviation of the magnetic vector from
                      its ground state. [...]},
      keywords     = {Dissertation (GND)},
      cin          = {PGI-1 / IAS-1},
      cid          = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406},
      pnm          = {422 - Spin-based and quantum information (POF2-422)},
      pid          = {G:(DE-HGF)POF2-422},
      typ          = {PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/154130},
}