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@ARTICLE{Perumal:168934,
      author       = {Perumal, Karthick and Braun, Wolfgang and Riechert, Henning
                      and Calarco, Raffaella},
      title        = {{G}rowth control of epitaxial
                      $\mathrm{{G}e{T}e–{S}b_2{T}e_3}$ films using a
                      line-of-sight quadrupole mass spectrometer},
      journal      = {Journal of crystal growth},
      volume       = {396},
      issn         = {0022-0248},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {DESY-2014-02740},
      pages        = {50 - 53},
      year         = {2014},
      abstract     = {A narrow growth window combined with highly temperature
                      dependent compositional variations poses a serious problem
                      for the growth of epitaxial GeTe–Sb2Te3 (GST) thin films.
                      The problems are further aggravated by the weak coupling of
                      the radiatively heated non-contact thermocouples to the
                      substrate. An increase in surface temperature during growth
                      as inferred from the increase in desorption of GeTe
                      heteromolecules and the resulting change in alloy
                      composition are studied. Using the desorption signal as a
                      feedback to control the surface temperature, the
                      thermocouple temperature was varied over the duration of the
                      growth to maintain a constant desorption and hence constant
                      surface temperature. Interestingly, the composition of the
                      grown films varies along the GeTe–Sb2Te3 pseudobinary line
                      just by varying the desorption without changing the supplied
                      flux. The out-of-plane lattice constant of the epitaxially
                      grown GST thin film increases with an increase in Ge
                      concentration},
      cin          = {FS-PE},
      ddc          = {540},
      cid          = {I:(DE-H253)FS-PE-20120731},
      pnm          = {54G - BESSY II (POF2-54G12) / FS Beamline without reference
                      (POF2-544)},
      pid          = {G:(DE-HGF)POF2-54G12 / G:(DE-H253)POF2-No-Ref-20130405},
      experiment   = {EXP:(DE-H253)Unknown-BL-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000335905400008},
      doi          = {10.1016/j.jcrysgro.2014.03.039},
      url          = {https://bib-pubdb1.desy.de/record/168934},
}