High quality electron system with variable electron layer thickness in a parabolic quantum well

T. Sajoto, J. Jo, M. Santos, M. Shayegan

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

We report the realization of a high quality electron system with variable areal density (ns) in a selectively doped, parabolic Ax Ga1-x As well. For each ns, quantum oscillations in the magnetoresistance are analyzed to obtain the electron densities of the electric subbands. These densities are in good agreement with the predictions of self-consistent calculations of the subband structure. The data reveal that with increasing ns, the width of the electron system increases so that the effective three-dimensional density and the Fermi energy remain essentially constant. The dependence of the low-temperature electron mobility on n s is also reported.

Original languageEnglish (US)
Pages (from-to)1430-1432
Number of pages3
JournalApplied Physics Letters
Volume55
Issue number14
DOIs
StatePublished - Dec 1 1989

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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