This title appears in the Scientific Report :
2003
Please use the identifier:
http://hdl.handle.net/2128/2148 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.90.036801 in citations.
Second-harmonic generation in GaAs : experiment verus theoretical predictions of X(2)xyz
Second-harmonic generation in GaAs : experiment verus theoretical predictions of X(2)xyz
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...
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Personal Name(s): | Bergfeld, S. |
---|---|
Daum, W. | |
Contributing Institute: |
Institut für Grenzflächen und Vakuumtechnologien; ISG-3 |
Published in: | Physical review letters, 90 (2003) S. 036801-1 |
Imprint: |
College Park, Md.
APS
2003
|
Physical Description: |
036801-1 |
DOI: |
10.1103/PhysRevLett.90.036801 |
Document Type: |
Journal Article |
Research Program: |
Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik |
Series Title: |
Physical Review Letters
90 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.90.036801 in citations.
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. |