The localised vibrational mode two-phonon absorption of carbon in gallium arsenide
- 26 June 1989
- journal article
- letter
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 1 (25) , 4025-4028
- https://doi.org/10.1088/0953-8984/1/25/015
Abstract
It is found that the 1115 and 1157 cm-1 absorption bands in GaAs doped intentionally with 13C (measured at 300 K) are manifestations of the localised vibrational mode two-phonon absorption of 12CAs and 13CAs. The ratios of the absorption intensity for single-phonon processes to that for two-phonon processes for 12C and 13C in GaAs are about 87 at 300 K and 75 at 10 K, respectively.Keywords
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