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@ARTICLE{Ding:888892,
      author       = {Ding, Shilei and Ross, Andrew and Go, Dongwook and
                      Baldrati, Lorenzo and Ren, Zengyao and Freimuth, Frank and
                      Becker, Sven and Kammerbauer, Fabian and Yang, Jinbo and
                      Jakob, Gerhard and Mokrousov, Yuriy and Kläui, Mathias},
      title        = {{H}arnessing {O}rbital-to-{S}pin {C}onversion of
                      {I}nterfacial {O}rbital {C}urrents for {E}fficient
                      {S}pin-{O}rbit {T}orques},
      journal      = {Physical review letters},
      volume       = {125},
      number       = {17},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2020-05297},
      pages        = {177201},
      year         = {2020},
      abstract     = {Current-induced spin-orbit torques (SOTs) allow for the
                      efficient electrical manipulation of magnetism in spintronic
                      devices. Engineering the SOT efficiency is a key goal that
                      is pursued by maximizing the active interfacial spin
                      accumulation or modulating the nonequilibrium spin density
                      that builds up through the spin Hall and inverse spin
                      galvanic effects. Regardless of the origin, the fundamental
                      requirement for the generation of the current-induced
                      torques is a net spin accumulation. We report on the large
                      enhancement of the SOT efficiency in thulium iron garnet
                      (TmIG)/Pt by capping with a CuOx layer. Considering the weak
                      spin-orbit coupling (SOC) of CuOx, these surprising findings
                      likely result from an orbital current generated at the
                      interface between CuOx and Pt, which is injected into the Pt
                      layer and converted into a spin current by strong SOC. The
                      converted spin current decays across the Pt layer and exerts
                      a “nonlocal” torque on TmIG. This additional torque
                      leads to a maximum colossal enhancement of the SOT
                      efficiency of a factor 16 for 1.5 nm of Pt at room
                      temperature, thus opening a path to increase torques while
                      at the same time offering insights into the underlying
                      physics of orbital transport, which has so far been
                      elusive.},
      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)},
      pid          = {G:(DE-HGF)POF3-142},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {33156648},
      UT           = {WOS:000580892200012},
      doi          = {10.1103/PhysRevLett.125.177201},
      url          = {https://juser.fz-juelich.de/record/888892},
}