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@ARTICLE{Parshin:824842,
      author       = {Parshin, P. P. and Chumakov, A. I. and Alekseev, P. A. and
                      Nemkovskiy, Kirill and Persson, Jörg and Dubrovinsky, L.
                      and Kantor, A. and Rüffer, R.},
      title        = {{E}xperimental observation of phonons as spectators in
                      {F}e{S}i electronic gap formation},
      journal      = {Physical review / B},
      volume       = {93},
      number       = {8},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2016-07344},
      pages        = {081102},
      year         = {2016},
      abstract     = {The evolution of a phonon spectrum in a narrow-gap
                      semiconductor FeSi was investigated in a wide range of
                      temperatures (46 K ≤T≤297 K, P=0.1 MPa) and pressures
                      (0.1 MPa ≤P≤43 GPa, T=297 K) using nuclear inelastic
                      scattering of synchrotron radiation with the energy
                      resolution 0.53 meV. Decreasing temperature as well as
                      increasing pressure causes a strong reorganization of the
                      phonon spectrum manifested in splitting and shifts of the
                      phonon peaks. The phonon spectra measured under the
                      temperature and pressure conditions corresponding to the
                      same unit cell volume reveal nearly complete matching. On
                      the contrary, the spectra measured under the conditions of
                      the equal mean-square atomic displacements differ
                      drastically. These observations suggest that the
                      transformation of the electronic spectrum of FeSi is
                      controlled predominantly by the change of the unit cell
                      volume. The corresponding changes of the interatomic forces
                      and the resulting modification of the phonon spectrum appear
                      as the direct consequence of this transformation.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2 / PGI-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000369404500001},
      doi          = {10.1103/PhysRevB.93.081102},
      url          = {https://juser.fz-juelich.de/record/824842},
}