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@ARTICLE{vonBergmann:58657,
      author       = {von Bergmann, K. and Heinze, S. and Bode, M. and Bihlmayer,
                      G. and Blügel, S. and Wiesendanger, R.},
      title        = {{C}omplex magnetism of the {F}e monolayer on {I}r(111)},
      journal      = {New journal of physics},
      volume       = {9},
      issn         = {1367-2630},
      address      = {[Bad Honnef]},
      publisher    = {Dt. Physikalische Ges.},
      reportid     = {PreJuSER-58657},
      pages        = {396},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The electronic and magnetic properties of Fe on Ir(111)
                      have been investigated experimentally by spin-polarized
                      scanning tunneling microscopy (SP-STM) and theoretically by
                      first-principles calculations based on density functional
                      theory. While the growth of an Fe monolayer is in-plane
                      commensurate, deposition of a double-layer shows a
                      rearrangement of atoms due to strain relief accompanied by
                      local variations of the electronic structure. Both stackings
                      of the monolayer, i.e. face centered cubic (fcc) and
                      hexagonal closed packed (hcp), are observed experimentally.
                      The magnetic structure of both types is imaged with SP-STM.
                      From these experiments, we propose a nanoscale magnetic
                      mosaic structure for the fcc-stacking with 15 atoms in the
                      unit cell. For hcp-stacking, the tunneling spectra are
                      similar to the fcc case, however, the magnetic contrast in
                      the SP-STM images is not as obvious. In our first-principles
                      calculations, a collinear antiferromagnetic (AFM) state with
                      a 15 atom in-plane unit cell (AFM 7 : 8 state) is found to
                      be more favorable than the ferromagnetic state for both fcc-
                      and hcp-stacking. Calculated SP-STM images and spectra are
                      also in good agreement with the experimental data for the
                      fcc case. We performed spin spiral calculations which are
                      mapped to a classical Heisenberg model to obtain the
                      exchange-interaction constants. From these calculations, it
                      is found that the AFM 7 : 8 state is energetically more
                      favorable than all solutions of the classical Heisenberg
                      model. While the obtained magnetic exchange constants are
                      rather similar for the fcc and hcp stacking, a comparison
                      with the experiments indicates that competing interactions
                      could be responsible for the differences observed in the
                      magnetically sensitive measurements.},
      keywords     = {J (WoSType)},
      cin          = {IFF-1 / JARA-FIT / JARA-SIM},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB781 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)VDB1045},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Physics, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000250600300012},
      doi          = {10.1088/1367-2630/9/10/396},
      url          = {https://juser.fz-juelich.de/record/58657},
}