Collective modes of a superlattice - plasmons, LO phonon-plasmons, and magnetoplasmons

The wavevector-frequency dependent dielectric constant is investigated for a superlattice structure. Attention here is focused on the collective modes of the GaAs-GaAlAs superlattice with doped (or modulated doped) quantum wells. For wells widely separated in space, such that Bloch wave function ove...

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Published in:Solid state communications 1982-08, Vol.43 (7), p.523-528
Main Authors: Bloss, W.L., Brody, E.M.
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Language:English
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cited_by cdi_FETCH-LOGICAL-c250t-6405e9e0ca4ebebe2cfa52c15d10f856365809a87e94cfc04f15482eac7f6ed83
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container_title Solid state communications
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creator Bloss, W.L.
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description The wavevector-frequency dependent dielectric constant is investigated for a superlattice structure. Attention here is focused on the collective modes of the GaAs-GaAlAs superlattice with doped (or modulated doped) quantum wells. For wells widely separated in space, such that Bloch wave function overlap between wells is negligible, a Bloch-like plasmon can propagate along the superlattice direction mediated entirely by Coulomb interaction alone. Interaction of these plasmons with optical phonons and with a magnetic field is investigated.
doi_str_mv 10.1016/0038-1098(82)90068-0
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title Collective modes of a superlattice - plasmons, LO phonon-plasmons, and magnetoplasmons
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