% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Klobes:280353,
      author       = {Klobes, Benedikt and Hu, Michael Y. and Beekman, Matt and
                      Johnson, David C. and Hermann, Raphael},
      title        = {{C}onfined lattice dynamics of single and quadruple
                      {S}n{S}e bilayers in [({S}n{S}e) $_{1.04}$ ] $_{m}$
                      [{M}o{S}e $_{2}$ ] $_{n}$ ferecrystals},
      journal      = {Nanoscale},
      volume       = {8},
      number       = {2},
      issn         = {2040-3372},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2016-00137},
      pages        = {856 - 861},
      year         = {2016},
      abstract     = {The Sn specific densities of phonon states in the SnSe
                      subunits of [(SnSe)1.04]m[MoSe2]n ferecrystals with (m,n) =
                      (1,1), (4,1) and in bulk SnSe were derived from nuclear
                      inelastic scattering by the 119Sn Mössbauer resonance.
                      Using different measurement configurations, phonons with
                      polarization parallel and perpendicular to the ferecrystal
                      plane were specifically probed. Vibrational properties and
                      phonon spectral weight are found to strongly depend on the
                      phonon polarization and layer count m. A highly peculiar
                      feature of these ferecrystal densities of phonon states is
                      the emergence of rather sharp high energy vibrational modes
                      polarized perpendicular to the ferecrystal plane, which
                      contrasts with usual findings in thin layered structures and
                      nanostructured materials in general, and a depletion of
                      modes with a gap appearing between acoustic and high energy
                      modes. The spectral weight of these phonons depends on the
                      overall SnSe content, m, but cannot be unambiguously
                      attributed to SnSe–MoSe2 interfaces. Considering the low
                      energy part of lattice dynamics, ferecrystals exhibit rather
                      low average phonon group velocities as compared to the speed
                      of sound in the long wavelength limit. For the (1,1)
                      ferecrystal, this effect is most pronounced for vibrations
                      polarized in the ferecrystal plane. Thus, an experimental
                      microscopic origin for the vibrational and bonding
                      anisotropy in subunits of ferecrystals is provided.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT},
      ddc          = {600},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$},
      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},
      UT           = {WOS:000367258500021},
      pubmed       = {pmid:26647996},
      doi          = {10.1039/C5NR06138E},
      url          = {https://juser.fz-juelich.de/record/280353},
}