Journal article

Publication year: 2018

Journal: Journal of Physics: Condensed Matter

Volume number: 30

Issue number: 48

ISSN: 0953-8984

eISSN: 1361-648X

Open access status: Green

DOI Link: https://doi.org/10.1088/1361-648X/aae85b

Publisher: IOP Publishing

Abstract: 
Optical second-harmonic generation is demonstrated to be a sensitive probe of the buried interface between the lattice-matched semiconductors gallium phosphide and silicon with (001) orientation. Ex situ rotational anisotropy measurements on GaP/Si heterostructures show a strong isotropic component of the second-harmonic response not present for pure Si(001) or GaP(001). The strength of the overlaying anisotropic response directly correlates with the quality of the interface as determined by atomically resolved scanning transmission electron microscopy. Systematic comparison of samples fabricated under different growth conditions in metal-organic vapor phase epitaxy reveals that the anisotropy for different polarization combinations can be used as a selective fingerprint for the occurrence of anti- phase domains and twins. This all-optical technique can be applied as an in situ and non- invasive monitor even during growth.

Harvard Citation style: Brixius, K., Beyer, A., Mette, G., Guedde, J., Duerr, M., Stolz, W., et al. (2018) Second-harmonic generation as a probe for structural and electronic properties of buried GaP/Si(001) interfaces, Journal of Physics: Condensed Matter, 30(48), Article 484001. https://doi.org/10.1088/1361-648X/aae85b

APA Citation style: Brixius, K., Beyer, A., Mette, G., Guedde, J., Duerr, M., Stolz, W., Volz, K., & Hoefer, U. (2018). Second-harmonic generation as a probe for structural and electronic properties of buried GaP/Si(001) interfaces. Journal of Physics: Condensed Matter. 30(48), Article 484001. https://doi.org/10.1088/1361-648X/aae85b