Abstract
The technique utilizes the capacitive coupling between a pair of Corbino electrodes and a conducting layer placed on top of, and insulated from, the electrodes. Measurements on heterostructures of GaAs/GaAlAs and GaAs/GaInP are reported. The audio-frequency impedance exhibits Shubnikov-deHaas oscillations. These oscillations are used to investigate persistent photoconductivity at 0.635 μm and 1.00 μm illumination. The role played by contacts is discussed.
Original language | English (US) |
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Pages (from-to) | 192-198 |
Number of pages | 7 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 1362 |
Issue number | pt 1 |
DOIs | |
State | Published - 1991 |
Event | Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications - Aachen, Ger Duration: Oct 28 1990 → Nov 2 1990 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering