% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Bouaziz:863280,
      author       = {Bouaziz, Juba and dos Santos Dias, Manuel and Guimarães,
                      Filipe Souza Mendes and Lounis, Samir},
      title        = {{S}pin dynamics of 3d and 4d impurities embedded in
                      prototypical topological insulators},
      journal      = {Physical review materials},
      volume       = {3},
      number       = {5},
      issn         = {2475-9953},
      address      = {College Park, MD},
      publisher    = {APS},
      reportid     = {FZJ-2019-03370},
      pages        = {054201},
      year         = {2019},
      abstract     = {Topological insulators are insulating bulk materials
                      hosting conducting surface states. Their magnetic doping
                      breaks time-reversal symmetry and generates numerous
                      interesting effects such as dissipationless transport.
                      Nonetheless, their dynamical properties are still poorly
                      understood. Here, we perform a systematic investigation of
                      transverse spin excitations of 3d and 4d single impurities
                      embedded in two prototypical topological insulators (Bi2Te3
                      and Bi2Se3). The impurity-induced states within the bulk gap
                      of the topological insulators are found to have a drastic
                      impact on the spin excitation spectra, resulting in very
                      high lifetimes reaching up to microseconds. An intuitive
                      picture of the spin dynamics is obtained by mapping onto a
                      generalized Landau-Lifshitz-Gilbert phenomenological model.
                      The first quantity extracted from this mapping procedure is
                      the magnetic anisotropy energy, which is then compared to
                      the one provided by the magnetic force theorem. This
                      uncovers some difficulties encountered with the latter,
                      which can provide erroneous results for impurities with a
                      high density of states at the Fermi energy. Moreover, the
                      Gilbert damping and nutation tensors are obtained. The
                      nutation effects can lead to a non-negligible shift in the
                      spin excitation resonance in the high-frequency regime.
                      Finally, we study the impact of the surface state on the
                      spin dynamics, which may be severely altered due to the
                      repositioning of the impurity-induced state in comparison to
                      the bulk case. Our systematic investigation of this series
                      of magnetic impurities sheds light on their spin dynamics
                      within topological insulators, with implications for
                      available and future experimental studies.},
      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)},
      pid          = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000467044000002},
      doi          = {10.1103/PhysRevMaterials.3.054201},
      url          = {https://juser.fz-juelich.de/record/863280},
}