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@ARTICLE{Biermanns:133639,
      author       = {Biermanns, Andreas and Rieger, Torsten and Bussone,
                      Genziana and Pietsch, Ullrich and Grützmacher, Detlev and
                      Lepsa, Mihail Ion},
      title        = {{A}xial strain in {G}a{A}s/{I}n{A}s core-shell nanowires},
      journal      = {Applied physics letters},
      volume       = {102},
      number       = {4},
      issn         = {0003-6951},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2013-02054},
      pages        = {043109 -},
      year         = {2013},
      abstract     = {We study the axial strain relaxation in GaAs/InAs
                      core-shell nanowire heterostructures grown by molecular beam
                      epitaxy. Besides a gradual strain relaxation of the shell
                      material, we find a significant strain in the GaAs core,
                      increasing with shell thickness. This strain is explained by
                      a saturation of the dislocation density at the core-shell
                      interface. Independent measurements of core and shell
                      lattice parameters by x-ray diffraction reveal a relaxation
                      of $93\%$ in a 35 nm thick InAs shell surrounding cores of
                      80 nm diameter. The compressive strain of $−0.5\%$
                      compared to bulk InAs is accompanied by a tensile strain up
                      to $0.9\%$ in the GaAs core.},
      cin          = {PGI-9 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {421 - Frontiers of charge based Electronics (POF2-421)},
      pid          = {G:(DE-HGF)POF2-421},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000314723600077},
      doi          = {10.1063/1.4790185},
      url          = {https://juser.fz-juelich.de/record/133639},
}