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On a biphononic origin of the 1125 cm^(-1) absorption band in cuprous oxide

V. M. Burlakov·M. Goeppert·A. Jolk·A. Dinger·R. Becker·C. F. Klingshirn
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Abstract

We report on the IR spectroscopic studies in both reflection (50-900 cm^{-1}) and transmission (900-3000 cm^{-1}) mode of the vibration spectrum of the cuprous oxide. A detailed analysis based on a comparison of the temperature dependences of the absorption band at 1125 cm^{-1} and of IR and Raman active fundamental vibrations results in assignment of the former to a biphonon.

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V. M. Burlakov, M. Goeppert, A. Jolk, A. Dinger, R. Becker, C. F. Klingshirn. 1999-01-11. On a biphononic origin of the 1125 cm^(-1) absorption band in cuprous oxide. https://doi.org/10.1016/s0375-9601(99)00052-3

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