Infrared reflectivity spectra of gas-source molecular beam epitaxy grown dilute InNxAs1-x/InP (001)

  • Talwar D
  • Yang T
  • Hsiung Lin H
 et al. 
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Abstract

Vibrational spectra of gas-source molecular beam epitaxy grown dilute InNxAs1-x/InP (001) alloys are obtained using a Fourier-transform infrared (IR) spectroscopy. A triply degenerate NAs local vibrational mode of Td-symmetry is observed near 438 cm -1 corresponding to the In-N bond energy. The analysis of composition dependent infrared reflectivity spectra in InNAs has predicted a two-phonon-mode behavior. In In(Ga)-rich GaInNAs alloys the observed splitting of the NAs local mode into a doublet for the NAs-Ga 1(In1)In3(Ga3) pair-defect of C 3v-symmetry is consistent with our simulated results based on a sophisticated Green's function theory. � 2013 American Institute of Physics.

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