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@ARTICLE{Chatterji:839913,
      author       = {Chatterji, T. and Demmel, F. and Jalarvo, N. and
                      Podlesnyak, A. and Kumar, C. M. N. and Xiao, Y. and
                      Brückel, T.},
      title        = {{Q}uasielastic and low-energy inelastic neutron scattering
                      study of {H}o{C}r{O} 3 by high resolution time-of-flight
                      neutron spectroscop},
      journal      = {Journal of physics / Condensed matter},
      volume       = {29},
      number       = {47},
      issn         = {1361-648X},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2017-07491},
      pages        = {475802 -},
      year         = {2017},
      abstract     = {In order to understand the origin of the huge quasielastic
                      magnetic scattering observed previously with a
                      back-scattering neutron spectrometer, we have
                      re-investigated the low energy excitations in HoCrO3 by
                      inelastic neutron scattering in a much wider energy range
                      with time-of-flight neutron spectrometers. The inelastic
                      signals are due to the excitations between the ground state
                      doublet of the Ho ion. The quasielastic signal is due to the
                      fluctuation of the disordered Ho moments. At low temperature
                      the intensity of quasielastic scattering is small. It starts
                      increasing as the temperature increases above 30 K. At the
                      same temperature, the elastic intensity due to Ho moment
                      ordering decreases in a similar way. This observation
                      strengthens the hypothesis that the quasielastic scattering
                      is due the fluctuations of the disordered Ho moments. The
                      time scale of fluctuations has been determine from the
                      quasielastic scattering and was found to vary from about
                      22 ps at $T = 70$ K to about 2.5 ps at $T = 160$ K. The
                      stretched exponential line shape indicates a distribution of
                      decay rates at low temperatures.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-SNS},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-SNS-20110128},
      pnm          = {144 - Controlling Collective States (POF3-144) / 524 -
                      Controlling Collective States (POF3-524) / 6212 - Quantum
                      Condensed Matter: Magnetism, Superconductivity (POF3-621) /
                      6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
                      G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
                      G:(DE-HGF)POF3-6G4},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29095702},
      UT           = {WOS:000422689300001},
      doi          = {10.1088/1361-648X/aa9245},
      url          = {https://juser.fz-juelich.de/record/839913},
}