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@ARTICLE{Wieser:201498,
      author       = {Wieser, R. and Caciuc, V. and Lazo, C. and Hölscher, H.
                      and Vedmedenko, E. Y. and Wiesendanger, R.},
      title        = {{A} theoretical study of the dynamical switching of a
                      single spin by exchange forces},
      journal      = {New journal of physics},
      volume       = {15},
      number       = {1},
      issn         = {1367-2630},
      address      = {[Bad Honnef]},
      publisher    = {Dt. Physikalische Ges.},
      reportid     = {FZJ-2015-03793},
      pages        = {013011},
      year         = {2013},
      abstract     = {We demonstrate the possibility of dynamically switching the
                      spin of a single atom or molecule with the magnetic tip of
                      an atomic force microscope making use of the acting exchange
                      forces. We choose single V-, Nb- and Ta-benzene molecules as
                      model systems and calculate the exchange interaction with an
                      Fe tip using density functional theory. The exchange energy
                      displays a Bethe?Slater-type behavior with ferromagnetic
                      coupling at large tip?sample distance and antiferromagnetic
                      coupling at closer proximity. The exchange energies reach
                      maximum values of a few tens of meV, which allows one to
                      switch single spins by overcoming the energy barrier due to
                      the magneto-crystalline anisotropy. The spin dynamics of the
                      system was explored by solving the time-dependent
                      Schr?dinger equation with additional Landau?Lifshitz-like
                      spin relaxation. We find that the distance dependence of the
                      exchange interaction as well as the appearance of quantum
                      tunneling results in different scenarios for the switching
                      behavior, e.g. the tip can switch the adatom or lead to a
                      stable superposition state with zero magnetization.},
      cin          = {IAS-1 / PGI-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
      pnm          = {422 - Spin-based and quantum information (POF2-422)},
      pid          = {G:(DE-HGF)POF2-422},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000313408000002},
      doi          = {10.1088/1367-2630/15/1/013011},
      url          = {https://juser.fz-juelich.de/record/201498},
}