Optical investigation of the two-dimensional hole energy spectrum in GaAs/AlxGa1−xAs heterojunctions
- 1 June 1993
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 73 (11), 7775-7779
- https://doi.org/10.1063/1.353982
Abstract
We present the results of optical studies on the energy spectrum of a two‐dimensional hole gas (2DHG) in a GaAs/AlxGa1−xAs structure. The photoluminescence (PL) line shape in the 2DHG is investigated as a function of temperature by heating the holes by a current flow through the 2D hole channel. The line shape of the PL from the 2DHG as a function of temperature is calculated by taking into account the real band structure and the hole–hole final‐state interaction. By comparing experiment and theory, it is found that the special features of the band structure predicted theoretically explain the experimental data.Keywords
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