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@ARTICLE{Freimuth:850618,
      author       = {Freimuth, Frank},
      title        = {{T}ailor-made currents},
      journal      = {Nature materials},
      volume       = {17},
      number       = {6},
      issn         = {1476-4660},
      address      = {Basingstoke},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2018-04426},
      pages        = {478 - 479},
      year         = {2018},
      abstract     = {The magnetization direction of nanosize magnets is used
                      nowadays to store information compactly in hard disks. The
                      magnetization points either up or down, which corresponds to
                      the values 0 and 1 of the bit. In order to reduce the size
                      of magnetic bits further and to increase the information
                      density in magnetic storage devices, the mechanism used to
                      write the bits by switching the magnetization up or down
                      needs to be efficient and reliable at smaller length scales.
                      The spin-transfer torque is such a scalable mechanism: when
                      a spin current traverses a magnet, the spins exert a torque
                      on the magnetization if they are not aligned with it. It can
                      therefore be used to switch the magnetization in magnetic
                      bilayers composed of a normal metal layer and a magnetic
                      layer (Fig. 1a). Spin currents flowing from the normal metal
                      into the magnet can be generated through electric currents
                      applied parallel to the bilayer interface1,2. In magnetic
                      bilayers, however, such current-induced torques on the
                      magnetization are not possible without spin–orbit
                      interaction and are therefore called spin–orbit torques.
                      Now, writing in Nature Materials, Baek and colleagues3
                      demonstrate an unexpected spin polarization of the spin
                      currents in trilayers composed of two magnets sandwiching a
                      normal metal layer (Fig. 1b) and show that the bottom magnet
                      can be used for the switching of the top magnet without an
                      additional external magnetic field.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {610},
      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       = {pmid:29795218},
      UT           = {WOS:000432928300006},
      doi          = {10.1038/s41563-018-0086-5},
      url          = {https://juser.fz-juelich.de/record/850618},
}