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@ARTICLE{Bode:56495,
      author       = {Bode, M. and Heide, M. and von Bergmann, K. and Ferriani,
                      P. and Heinze, S. and Bihlmayer, G. and Kubetzka, A. and
                      Pietzsch, O. and Blügel, S. and Wiesendanger, R.},
      title        = {{C}hiral magnetic order at surfaces driven by inversion
                      asymmetry},
      journal      = {Nature},
      volume       = {447},
      issn         = {0028-0836},
      address      = {London [u.a.]},
      publisher    = {Nature Publising Group},
      reportid     = {PreJuSER-56495},
      pages        = {190 - 193},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Chirality is a fascinating phenomenon that can manifest
                      itself in subtle ways, for example in biochemistry (in the
                      observed single-handedness of biomolecules) and in particle
                      physics (in the charge-parity violation of electroweak
                      interactions). In condensed matter, magnetic materials can
                      also display single-handed, or homochiral, spin structures.
                      This may be caused by the Dzyaloshinskii-Moriya interaction,
                      which arises from spin-orbit scattering of electrons in an
                      inversion-asymmetric crystal field. This effect is typically
                      irrelevant in bulk metals as their crystals are inversion
                      symmetric. However, low-dimensional systems lack structural
                      inversion symmetry, so that homochiral spin structures may
                      occur. Here we report the observation of magnetic order of a
                      specific chirality in a single atomic layer of manganese on
                      a tungsten (110) substrate. Spin-polarized scanning
                      tunnelling microscopy reveals that adjacent spins are not
                      perfectly antiferromagnetic but slightly canted, resulting
                      in a spin spiral structure with a period of about 12 nm. We
                      show by quantitative theory that this chiral order is caused
                      by the Dzyaloshinskii-Moriya interaction and leads to a
                      left-rotating spin cycloid. Our findings confirm the
                      significance of this interaction for magnets in reduced
                      dimensions. Chirality in nanoscale magnets may play a
                      crucial role in spintronic devices, where the spin rather
                      than the charge of an electron is used for data transmission
                      and manipulation. For instance, a spin-polarized current
                      flowing through chiral magnetic structures will exert a
                      spin-torque on the magnetic structure, causing a variety of
                      excitations or manipulations of the magnetization and giving
                      rise to microwave emission, magnetization switching, or
                      magnetic motors.},
      keywords     = {J (WoSType)},
      cin          = {IFF-1 / JARA-FIT / JARA-SIM},
      ddc          = {070},
      cid          = {I:(DE-Juel1)VDB781 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)VDB1045},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Multidisciplinary Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17495922},
      UT           = {WOS:000246338700039},
      doi          = {10.1038/nature05802},
      url          = {https://juser.fz-juelich.de/record/56495},
}