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@ARTICLE{Bergfeld:28933,
      author       = {Bergfeld, S. and Daum, W.},
      title        = {{S}econd-harmonic generation in {G}a{A}s : experiment verus
                      theoretical predictions of {X}(2)xyz},
      journal      = {Physical review letters},
      volume       = {90},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-28933},
      pages        = {036801-1},
      year         = {2003},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {For GaAs we have determined $\chi(xyz)((2))(-2omega;$
                      omega, $omega)\$ in second-harmonic generation experiments
                      using two-photon energies between 2 and 5 eV. In addition to
                      the E-1, E-1 + Delta(1), E-0', and E-2 critical-point bulk
                      transitions of GaAs, a surprisingly strong surface
                      transition at 3.35 eV was observed for natively oxidized
                      GaAs(001) samples. A detailed comparison with theoretical
                      predictions reveals that calculations that include
                      many-particle effects at the level of the "scissors"
                      approximation can describe the overall frequency dependence
                      of the second-harmonic susceptibility reasonably well.},
      keywords     = {J (WoSType)},
      cin          = {ISG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB43},
      pnm          = {Materialien, Prozesse und Bauelemente für die Mikro- und
                      Nanoelektronik},
      pid          = {G:(DE-Juel1)FUEK252},
      shelfmark    = {Physics, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000180579200042},
      doi          = {10.1103/PhysRevLett.90.036801},
      url          = {https://juser.fz-juelich.de/record/28933},
}