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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},
}