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

Garrilovic, P., Meehan, K., Holonyak, N., Hess, K., Zurawsky, W.P., Drickamer, H.G., Ludowise, M.J., Dietze, W.T. and Lewis, C.R. (1983) Absorption measurements at high pressure (0–10kbar) on strained superlattices. Solid State Communications, 45(9), pp. 803-806. (doi: 10.1016/0038-1098(83)90804-9)

Abstract

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Meehan, Professor Kathleen
• Authors: Garrilovic, P., Meehan, K., Holonyak, N., Hess, K., Zurawsky, W.P., Drickamer, H.G., Ludowise, M.J., Dietze, W.T., and Lewis, C.R.
• College/School: College of Science and Engineering > School of Engineering
• Journal Name: Solid State Communications
• Publisher: Elsevier
• ISSN: 0038-1098
• ISSN (Online): 1879-2766