In a recent Letter, Sood, Menendez, Cardona, and Ploog (SMCP) reported Raman measurements of confined LO and TO phonons in GaAs/A1As superlattices. We focus on the results shown in Fig. 4 of SMCP, where the observed frequencies of the modes confined in GaAs layers deviate towards higher energy with respect to the folded bulk modes for q & n/a (100).
Superlattice Effects on Confined Phonons / Molinari, Elisa; Fasolino, Annalisa; K., Kunc. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 56:(1986), pp. 1751-1751. [10.1103/PhysRevLett.56.1751]
Superlattice Effects on Confined Phonons
MOLINARI, Elisa;FASOLINO, Annalisa;
1986
Abstract
In a recent Letter, Sood, Menendez, Cardona, and Ploog (SMCP) reported Raman measurements of confined LO and TO phonons in GaAs/A1As superlattices. We focus on the results shown in Fig. 4 of SMCP, where the observed frequencies of the modes confined in GaAs layers deviate towards higher energy with respect to the folded bulk modes for q & n/a (100).
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