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@ARTICLE{Schmitz:186711,
      author       = {Schmitz, D. and Schmitz-Antoniak, C. and Warland, A. and
                      Darbandi, M. and Haldar, S. and Bhandary, S. and Eriksson,
                      O. and Sanyal, B. and Wende, H.},
      title        = {{T}he dipole moment of the spin density as a local
                      indicator for phase transitions},
      journal      = {Scientific reports},
      volume       = {4},
      issn         = {2045-2322},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2015-00783},
      pages        = {5760},
      year         = {2014},
      abstract     = {The intra-atomic magnetic dipole moment - frequently called
                      ÆTzæ term - plays an important role in thedetermination of
                      spin magnetic moments by x-ray absorption spectroscopy for
                      systems with nonsphericalspin density distributions. In this
                      work, we present the dipole moment as a sensitive monitor to
                      changes inthe electronic structure in the vicinity of a
                      phase transiton. In particular, we studied the dipole moment
                      atthe Fe21 and Fe31 sites of magnetite as an indicator for
                      the Verwey transition by a combination of x-raymagnetic
                      circular dichroism and density functional theory. Our
                      experimental results prove that there existsa local change
                      in the electronic structure at temperatures above the Verwey
                      transition correlated to theknown spin reorientation.
                      Furthermore, it is shown that measurement of the dipole
                      moment is a powerfultool to observe this transition in small
                      magnetite nanoparticles for which it is usually screened by
                      blockingeffects in classical magnetometry.},
      cin          = {PGI-6},
      ddc          = {000},
      cid          = {I:(DE-Juel1)PGI-6-20110106},
      pnm          = {422 - Spin-based and quantum information (POF2-422)},
      pid          = {G:(DE-HGF)POF2-422},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000339157000003},
      pubmed       = {pmid:25041757},
      doi          = {10.1038/srep05760},
      url          = {https://juser.fz-juelich.de/record/186711},
}