Absorption measurements at high pressure (0-10kbar) on strained superlattices

P. Garrilovic, K. Meehan, N. Holonyak, K. Hess, W. P. Zurawsky, H. G. Drickamer, M. J. Ludowise, W. T. Dietze, C. R. Lewis

Research output: Contribution to journalArticlepeer-review


Absorption data on strained GaAs1-xPx-GaAs superlattices (SL, 128-period, barrier size LB≈75 Å, quantum-well size Lz≈75 Å, alloy composition x≈0.25) are presented in the range 0-10 kbars. The absorption curves obtained show no exciton show no exciton peaks such as seen in lattice- matched AlxGa1-xAs-GaAs SL's, and the pressure coefficient decreases from 11.5 meV/kbar to ≈ 10.5 meV/kbar in the wells and ≈6.5 meV/kbar at energies approaching and above the barrier energies. This behavior is attributed to the fluctuations in strain caused by the alloy disorder, and clustering, of the barriers.

Original languageEnglish (US)
Pages (from-to)803-806
Number of pages4
JournalSolid State Communications
Issue number9
StatePublished - Mar 1983

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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