TY - JOUR
T1 - Second-order Raman spectra and lattice dynamics in AlAs
AU - Azuhata, T.
AU - Sota, T.
AU - Suzuki, K.
PY - 1995/12/1
Y1 - 1995/12/1
N2 - We have re-examined the second-order Raman spectra in a thick AlAs layer grown on a GaAs substrate by polarized Raman spectroscopy. So as to reproduce the spectra, the force constants have been refined and then the phonon dispersion has been calculated within a modified version of the adiabatic bond-charge model. We present phonon frequencies at critical points, e.g. Gamma , X, L and W, and the force constants for AlAs. The phonon dispersion is compared with a previous ab initio result and it is shown that the procedure presented herein is useful. A brief discussion is also given of the analysis of the second-order Raman spectra of AlSb.
AB - We have re-examined the second-order Raman spectra in a thick AlAs layer grown on a GaAs substrate by polarized Raman spectroscopy. So as to reproduce the spectra, the force constants have been refined and then the phonon dispersion has been calculated within a modified version of the adiabatic bond-charge model. We present phonon frequencies at critical points, e.g. Gamma , X, L and W, and the force constants for AlAs. The phonon dispersion is compared with a previous ab initio result and it is shown that the procedure presented herein is useful. A brief discussion is also given of the analysis of the second-order Raman spectra of AlSb.
UR - http://www.scopus.com/inward/record.url?scp=0029251526&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029251526&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/7/9/018
DO - 10.1088/0953-8984/7/9/018
M3 - Article
AN - SCOPUS:0029251526
SN - 0953-8984
VL - 7
SP - 1949
EP - 1957
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 9
M1 - 018
ER -