% 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{Peixoto:888146,
      author       = {Peixoto, Thiago R. F. and Bentmann, Hendrik and Rüßmann,
                      Philipp and Tcakaev, Abdul-Vakhab and Winnerlein, Martin and
                      Schreyeck, Steffen and Schatz, Sonja and Vidal, Raphael
                      Crespo and Stier, Fabian and Zabolotnyy, Volodymyr and
                      Green, Robert J. and Min, Chul Hee and Fornari, Celso I. and
                      Maaß, Henriette and Vasili, Hari Babu and Gargiani,
                      Pierluigi and Valvidares, Manuel and Barla, Alessandro and
                      Buck, Jens and Hoesch, Moritz and Diekmann, Florian and
                      Rohlf, Sebastian and Kalläne, Matthias and Rossnagel, Kai
                      and Gould, Charles and Brunner, Karl and Blügel, Stefan and
                      Hinkov, Vladimir and Molenkamp, Laurens W. and Reinert,
                      Friedrich},
      title        = {{N}on-local effect of impurity states on the exchange
                      coupling mechanism in magnetic topological insulators},
      journal      = {npj quantum materials},
      volume       = {5},
      number       = {1},
      issn         = {2397-4648},
      address      = {[London]},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2020-04720},
      pages        = {87},
      year         = {2020},
      abstract     = {Since the discovery of the quantum anomalous Hall (QAH)
                      effect in the magnetically doped topological insulators
                      (MTI) Cr:(Bi,Sb)2Te3 and V:(Bi,Sb)2Te3, the search for the
                      magnetic coupling mechanisms underlying the onset of
                      ferromagnetism has been a central issue, and a variety of
                      different scenarios have been put forward. By combining
                      resonant photoemission, X-ray magnetic circular dichroism
                      and density functional theory, we determine the local
                      electronic and magnetic configurations of V and Cr
                      impurities in (Bi,Sb)2Te3. State-of-the-art first-principles
                      calculations find pronounced differences in their 3d
                      densities of states, and show how these impurity states
                      mediate characteristic short-range pd exchange interactions,
                      whose strength sensitively varies with the position of the
                      3d states relative to the Fermi level. Measurements on films
                      with varying host stoichiometry support this trend. Our
                      results explain, in an unified picture, the origins of the
                      observed magnetic properties, and establish the essential
                      role of impurity-state-mediated exchange interactions in the
                      magnetism of MTI.},
      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:000590981700001},
      doi          = {10.1038/s41535-020-00288-0},
      url          = {https://juser.fz-juelich.de/record/888146},
}