Propagation of plasmons across layers of GaAs-Ga1 -xAlxAs superlattices

D. Kirillov, C. Webb, J. Eckstein

Research output: Contribution to journalArticlepeer-review


The transformation from quasi-two-dimensional to three-dimensional behavior of the free-electron gas in GaAs-Ga1-xAlxAs multiple quantum well structures was observed. This transformation corresponds to the establishment of well defined three-dimensional plasmon modes measured by Raman scattering, which propagate across layers of an n-type doped superlattice when the layer thicknesses are reduced to 20 Å or less. This type of behavior is consistent with the Kronig-Penney type model describing coupling between the wells and formation of energy minibands in a superlattice.

Original languageEnglish (US)
Pages (from-to)1366-1368
Number of pages3
JournalApplied Physics Letters
Issue number20
StatePublished - 1986
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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