Title: Determination of valence-band effective-mass anisotropy in GaAs quantum wells by optical spectroscopy
Abstract: We present the first high-resolution excitation spectra of (Al,Ga)As multiple-quantum-well structures grown on substrates with different orientations [(001), $(111)B$, and (310) planes]. The features in these spectra can be consistently assigned by a single set of effective masses in a sophisticated eight-bank $\mathbf{k}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{p}$ calculation. In this way, we obtain very directly the anisotropy of the valence bands in GaAs. We obtain masses of $0.34{m}_{0}$ and $0.094{m}_{0}$ for the heavy hole and the light hole in the [001] direction and $0.7{m}_{0}$ for the heavy hole in the [111] direction.
Publication Year: 1988
Publication Date: 1988-08-15
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 86
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