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Raman scattering from longitudinal-optical phonon-plasmon-coupled mode in carbon-doped p-type InGaAs (1995)

Qi, Ming ; Konagai, Makoto ; Takahashi, Kiyoshi

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 78 (1995), S. 7265-7268

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The Raman scattering by longitudinal-optical (LO) phonon-plasmon-coupled (LOPC) mode in carbon-doped p-type InGaAs with indium composition x≈0.3 and hole concentration from 1017 to 1019 cm−3 grown by metalorganic molecular beam epitaxy was studied experimentally. Only one LOPC mode appears between the GaAs-like and InAs-like LO modes was observed. The peak position of the LOPC mode is near the GaAs-like transverse-optical mode frequency and is insensitive to the hole concentration. The linewidth and intensity of the LOPC mode are dependent strongly on the carrier concentration, while the two LO modes decrease and become invisible under the high doping level. It was shown that the plasmon damping effect plays a dominant role in Raman scattering by LOPC mode for the p-type InGaAs. © 1995 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.360440

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