T. Sugiura et al., RAMAN-SCATTERING STUDY OF THE IMMISCIBLE REGION IN INGAASP GROWN BY LPE ON (100)GAAS AND (111)GAAS, Journal of electronic materials, 25(4), 1996, pp. 695-699
We have studied the asymmetric broadening of the Raman spectra of In G
a1-xAsyP1-y grown on GaAs substrates by means of the spatial correlati
on model. The broadening phenomena was found to be enhanced in the reg
ion of immiscibility, in agreement with PL observations. In Raman meas
urements, the broadening is more enhanced in the samples grown on (100
) substrates than in the samples grown on (111) substrates. The enhanc
ement is attributed to the immiscibility included in the samples grown
on (100) substrate.