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@ARTICLE{Freimuth:172721,
      author       = {Freimuth, Frank and Blügel, Stefan and Mokrousov, Yuriy},
      title        = {{S}pin-orbit torques in {C}o/{P}t(111) and {M}n/{W}(001)
                      magnetic bilayers from first principles},
      journal      = {Physical review / B},
      volume       = {90},
      number       = {17},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2014-06165},
      pages        = {174423},
      year         = {2014},
      abstract     = {An applied electric current through a space-inversion
                      asymmetric magnet induces spin-orbit torques (SOTs) on the
                      magnetic moments, which holds much promise for future memory
                      devices. We discuss general Green's function expressions
                      suitable to compute the linear-response SOT in disordered
                      ferromagnets. The SOT can be decomposed into an even and an
                      odd component with respect to magnetization reversal, where
                      in the limit of vanishing disorder the even SOT is given by
                      the constant Berry curvature of the occupied states, while
                      the odd part exhibits a divergence with respect to disorder
                      strength. Within this formalism, we perform first-principles
                      density-functional theory calculations of the SOT in
                      Co/Pt(111) and Mn/W(001) magnetic bilayers. We find the even
                      and odd torque components to be of comparable magnitude.
                      Moreover, the odd torque depends strongly on an additional
                      capping layer, while the even torque is less sensitive. We
                      show that the even torque is nearly entirely mediated by
                      spin currents in contrast to the odd torque, which can
                      contain an important contribution not due to spin transfer.
                      Our results are in agreement with experiments, showing that
                      our linear-response theory is well-suited for the
                      description of SOTs in complex ferromagnets.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {422 - Spin-based and quantum information (POF2-422)},
      pid          = {G:(DE-HGF)POF2-422},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000345244400002},
      doi          = {10.1103/PhysRevB.90.174423},
      url          = {https://juser.fz-juelich.de/record/172721},
}