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@ARTICLE{Alekseev:22584,
      author       = {Alekseev, P.A. and Nemkovski, K.S. and Mignot, J.-M. and
                      Lazukov, V.N. and Nikolov, A.A. and Menushenkov, A.P. and
                      Yaroslavtsev, A.A. and Bewley, R.I. and Stewart, J.R. and
                      Gribanov, A.V.},
      title        = {{M}agnetic {E}xcitations in {E}u{C}u2({S}ix{G}e1-x)2: from
                      mixed valence towards magnetism},
      journal      = {Journal of physics / Condensed matter},
      volume       = {24},
      issn         = {0953-8984},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PreJuSER-22584},
      pages        = {375601},
      year         = {2012},
      note         = {The work was supported by the RFBR grant No. 11-02-00121.},
      abstract     = {We report the inelastic neutron scattering study of spin
                      dynamics in EuCu(2)(Si(x)Ge(1-x))(2) (x = 1, 0.9, 0.75,
                      0.6), performed in a wide temperature range. At x = 1 the
                      magnetic excitation spectrum was found to be represented by
                      the double-peak structure well below the energy range of the
                      Eu(3+) spin-orbit (SO) excitation (7)F(0)→(7)F(1), so that
                      at least the high-energy spectral component can be assigned
                      to the renormalized SO transition. Change of the Eu valence
                      towards 2 + with increased temperature and/or Ge
                      concentration results in further renormalization (lowering
                      the energy) and gradual suppression of both inelastic peaks
                      in the spectrum, along with developing sizeable quasielastic
                      signal. The origin of the spectral structure and its
                      evolution is discussed in terms of excitonic model for the
                      mixed valence state.},
      keywords     = {J (WoSType)},
      cin          = {PGI-4 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-4-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien
                      (FUEK412) / 544 - In-house Research with PNI (POF2-544)},
      pid          = {G:(DE-Juel1)FUEK412 / G:(DE-HGF)POF2-544},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:22914172},
      UT           = {WOS:000308202700017},
      doi          = {10.1088/0953-8984/24/37/375601},
      url          = {https://juser.fz-juelich.de/record/22584},
}