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VOLUME 55 (1992) | ISSUE 10 | PAGE 564
Anharmonicity of GaAs optical vibrations in GaAs/AlAs superlattices
Structural features due to an anharmonicity of GaAs optical vibrations have been observed on the temperature dependence of the optical vibrational modes localized in GaAs layers. The Gruneisen parameters of localized optical vibrations far from the center of the Brillouin zone have been determined experimentally for the first time.