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@ARTICLE{Rmann:857661,
      author       = {Rüßmann, Philipp and Mahatha, Sanjoy K and Sessi, Paolo
                      and Valbuena, Miguel A and Bathon, Thomas and Fauth, Kai and
                      Godey, Sylvie and Mugarza, Aitor and Kokh, Konstantin A and
                      Tereshchenko, Oleg E and Gargiani, Pierluigi and Valvidares,
                      Manuel and Jiménez, Erika and Brookes, Nicholas B and Bode,
                      Matthias and Bihlmayer, Gustav and Blügel, Stefan and
                      Mavropoulos, Phivos and Carbone, Carlo and Barla,
                      Alessandro},
      title        = {{T}owards microscopic control of the magnetic exchange
                      coupling at the surface of a topological insulator},
      journal      = {JPhys materials},
      volume       = {1},
      number       = {1},
      issn         = {2515-7639},
      address      = {Bristol},
      publisher    = {IOP Publishing},
      reportid     = {FZJ-2018-06639},
      pages        = {015002},
      year         = {2018},
      abstract     = {Magnetically doped topological insulators may produce novel
                      states of electronic matter, where for instance the quantum
                      anomalous Hall effect state can be realized. Pivotal to this
                      goal is a microscopic control over the magnetic state,
                      defined by the local electronic structure of the dopants and
                      their interactions. We report on the magnetic coupling among
                      Mn or Co atoms adsorbed on the surface of the topological
                      insulator Bi2Te3. Our findings uncover the mechanisms of the
                      exchange coupling between magnetic atoms coupled to the
                      topological surface state in strong topological insulators.
                      The combination of x-ray magnetic circular dichroism and ab
                      initio calculations reveals that the sign of the magnetic
                      coupling at short adatom–adatom distances is opposite for
                      Mn with respect to Co. For both elements, the magnetic
                      exchange reverses its sign at a critical distance between
                      magnetic adatoms, as a result of the interplay between
                      superexchange, double exchange and
                      Ruderman–Kittel–Kasuya–Yoshida interactions.},
      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) /
                      Scattering of topologically protected states off defects in
                      topological insulators $(jara0078_20131101)$},
      pid          = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143 /
                      $G:(DE-Juel1)jara0078_20131101$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000552655300001},
      doi          = {10.1088/2515-7639/aad02a},
      url          = {https://juser.fz-juelich.de/record/857661},
}