Abstract
Raman scattering in a number of BeTe/ZnSe type-II superlattices which share no common cations or anions in the interfaces was studied. Folded acoustic phonons; LO phonons of the first, second, and third order in the ZnSe layers; and Kliewer-Fuchs-type electrostatic interface phonons were observed when excited in resonance with the direct exciton transition in the ZnSe layers. Nonresonant excitation produced LO phonons in the ZnSe and BeTe layers and a high-frequency mechanical interface mode, assigned tentatively to a local vibration of the interface Be-Se bond.
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Translated from Fizika Tverdogo Tela, Vol. 45, No. 8, 2003, pp. 1503–1509.
Original Russian Text Copyright © 2003 by Reshina, Ivanov, Kosobukin, Sorokin, Toropov.
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Reshina, I.I., Ivanov, S.V., Kosobukin, V.A. et al. Acoustic, optical, and interface phonons in BeTe/ZnSe superlattices. Phys. Solid State 45, 1579–1585 (2003). https://doi.org/10.1134/1.1602899
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DOI: https://doi.org/10.1134/1.1602899