Lateral Composition Modulation in InAs/GaSb Superlattices

Abstract

We report the analysis of lateral composition modulation in (InAs)m/(GaSb)m superlattices by x-ray diffraction. Vertical and lateral satellite peaks for a 140 period structure were observed. The lateral modulation wavelength, average superlattice composition, and vertical superlattice wavelength were determined. The lateral modulation was observed only along one in-plane direction resulting in quantum wire-like structures along the [110] direction. The unconventional structure of the lateral composition modulation, in which the stacking of the layers leads to a doubling of the vertical superlattice period, is discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2003
Accession Number
ADA483171

Entities

People

  • B. R. Bennett
  • B. Z. Nosho
  • D. W. Stokes
  • J. H. Li
  • Lloyd J. Whitman
  • M. Goldenberg
  • R. L. Forrest
  • S. C. Moss

Organizations

  • University of Houston

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Crystal Lattices
  • Diffraction
  • Electron Microscopy
  • Energy Bands
  • Epitaxial Growth
  • Films
  • High Resolution
  • Materials
  • Military Research
  • Modulation
  • Physical Properties
  • Semiconductors
  • Superlattices
  • Surface Tension
  • Valence Bands
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Quantum Computing
  • Space