The longitudinal phonon spectrum and the associated Raman strength of (100) InAs/GaSb superlattices are calculated along the growth direction. Apart from confined and extended modes, as found also in GaAs/AlAs superlattices, this system shows new modes localized at the interface. The energy and the Raman strength of these latter modes depend crucially on the nature of the interface (InSb or GaAs) and suggest that they are experimentally observable.
Calculated longitudinal superlattice and interface phonons of InAs/GaSb superlattices / A., Fasolino; Molinari, Elisa; J. C., Maan. - In: SUPERLATTICES AND MICROSTRUCTURES. - ISSN 0749-6036. - STAMPA. - 3:(1987), pp. 117-120. [10.1016/0749-6036(87)90042-5]
Calculated longitudinal superlattice and interface phonons of InAs/GaSb superlattices
MOLINARI, Elisa;
1987
Abstract
The longitudinal phonon spectrum and the associated Raman strength of (100) InAs/GaSb superlattices are calculated along the growth direction. Apart from confined and extended modes, as found also in GaAs/AlAs superlattices, this system shows new modes localized at the interface. The energy and the Raman strength of these latter modes depend crucially on the nature of the interface (InSb or GaAs) and suggest that they are experimentally observable.
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