Fabrication and transport study of finite lateral superlattices

M. Hannan, R. Grundbacher, P. Fay, I. Adesida, R. W. Giannetta, C. J. Wagner, M. R. Melloch

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Transport measurements are reported for a two-dimensional electron gas subject to a finite lateral superlattice potential. Devices are fabricated in high mobility GaAs/AlGaAs heterostructures with modulation periods in the range of 2000-3000 Å and differing numbers of gates. Conductance plateaus are observed at gate voltages where the thermopower is stationary. These features indicate the possible formation of effective one-dimensional conductance channels through the potential landscape formed by the lateral gates. The plateau conductances are much less than the basic quantum unit (2e2/h).

Original languageEnglish
Pages (from-to)2821-2824
Number of pages4
JournalJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume15
Issue number6
DOIs
Publication statusPublished - Jan 1 1997

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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