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@ARTICLE{Azpiroz:838270,
      author       = {Azpiroz, Julen Ibanez and dos Santos Dias, Manuel and
                      Blügel, Stefan and Lounis, Samir},
      title        = {{L}ongitudinal and transverse spin relaxation times of
                      magnetic single adatoms: {A}n ab initio analysis},
      journal      = {Physical review / B},
      volume       = {96},
      number       = {14},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2017-06913},
      pages        = {144410},
      year         = {2017},
      abstract     = {We present a systematic ab initio investigation of the
                      longitudinal and transverse spin relaxation times of
                      magnetic single adatoms deposited on metallic substrates.
                      Our analysis based on time-dependent density functional
                      theory shows that the longitudinal time T∥ is of order
                      femtosecond while the transverse time T⊥ is of order
                      picosecond, i.e. T⊥≫T∥. This comes as a consequence of
                      the different energy scales of the corresponding processes:
                      T∥ involves spin-density excitations of order eV, while
                      T⊥ is governed by atomic spin excitations of order meV.
                      Comparison to available inelastic scanning tunneling
                      spectroscopy dI/dV experimental curves shows that the order
                      of magnitude of T⊥ agrees well with our results. Regarding
                      T∥, the time scale calculated here is several orders of
                      magnitude faster than what has been measured up to now; we
                      therefore propose that an ultrafast laser pulse measuring
                      technique is required in order to access the ultrafast spin
                      dynamics described in this paper.},
      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          = {142 - Controlling Spin-Based Phenomena (POF3-142) / 143 -
                      Controlling Configuration-Based Phenomena (POF3-143) /
                      Calculation of quantum spin-fluctuations in nano-magnets
                      $(jias19_20161101)$},
      pid          = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143 /
                      $G:(DE-Juel1)jias19_20161101$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000412434600005},
      doi          = {10.1103/PhysRevB.96.144410},
      url          = {https://juser.fz-juelich.de/record/838270},
}