Measured transition from two-dimensional to three-dimensional electroabsorption as quantum-well barriers are lowered.

K. W. Goossen,J. E. Cunningham,Michael D. Williams,F. G. Storz,W. Y. Jan

Measured transition from two-dimensional to three-dimensional electroabsorption as quantum-well barriers are lowered.

1992

K. W. Goossen
J. E. Cunningham
Michael D. Williams
F. G. Storz
W. Y. Jan

Electric-field-dependent measurements of photocurrent spectra of GaAs-Al x Al x Ga 1−x As multipke quantum wells are made for 0.0013quantum-confined Stark effect are observed for x as low as 0.0082. Below that x value behavior is more bulklike. It is ar this x value that theory predicts that the holes should become delocalized. This study indicates that a three-dimensional electron and a two-dimensional hole results in a two-dimensional exciton in this system

Keywords:

Stark effect
Condensed matter physics
Spectral line
Quantum Hall effect
Delocalized electron
Quantum well
Exciton
Nuclear magnetic resonance
Electron
Physics
Quantum-confined Stark effect
Inorganic compound
Photoconductivity

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