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@ARTICLE{Alekseev:187996,
      author       = {Alekseev, P. A. and Nemkovskiy, Kirill and Mignot, J.-M.
                      and Clementyev, E. S. and Ivanov, A. S. and Rols, S. and
                      Bewley, R. I. and Filipov, V. B. and Shitsevalova, N. Yu.},
      title        = {{P}ossible undercompensation effect in the {K}ondo
                      insulator ({Y}b,{T}m){B}${}_{12}${J}},
      journal      = {Physical review / B},
      volume       = {89},
      number       = {11},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2015-01485},
      pages        = {115121},
      year         = {2014},
      abstract     = {The effects of Tm substitution on the dynamical magnetic
                      response of Yb1−xTmxB12 (x=0, 0.08, 0.15, and 0.75) and
                      Lu0.92Tm0.08B12 compounds have been studied using
                      time-of-flight inelastic neutron scattering. Major changes
                      were observed in the spectral structure and temperature
                      evolution of the Yb contribution to the inelastic response
                      for a rather low content of magnetic Tm ions. A sizable
                      influence of the RB12 host (YbB12, as compared to LuB12 or
                      pure TmB12) on the crystal-field splitting of the Tm3+ ion
                      is also reported. The results point to a specific effect of
                      impurities carrying a magnetic moment (Tm, as compared to Lu
                      or Zr) in a Kondo insulator, which is thought to reflect the
                      “undercompensation” of Yb magnetic moments, originally
                      Kondo screened in pure YbB12. A parallel is made with the
                      strong effect of Tm substitution on the temperature
                      dependence of the Seebeck coefficient in Yb1−xTmxB12,
                      which was reported previously},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2 / PGI-4 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {54G - JCNS (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000333125500002},
      doi          = {10.1103/PhysRevB.89.115121},
      url          = {https://juser.fz-juelich.de/record/187996},
}