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Nonplanar two-dimensional electron gases in InAs heterostructures on GaAs

Using transport measurements in tilted magnetic fields we observe direct evidence of a nonplanar electron system in an InAs/InGaAs quantum well. The corrugation results from the lattice-mismatched epitaxial growth of the heterostructure on a GaAs substrate. We argue that the curvature of the electro...

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Bibliographic Details
Published in:Applied physics letters 2004-01, Vol.84 (4), p.550-552
Main Authors: Löhr, S., Heyn, Ch, Hansen, W.
Format: Article
Language:English
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Summary:Using transport measurements in tilted magnetic fields we observe direct evidence of a nonplanar electron system in an InAs/InGaAs quantum well. The corrugation results from the lattice-mismatched epitaxial growth of the heterostructure on a GaAs substrate. We argue that the curvature of the electron system may result in an appreciable effective spin-orbit interaction.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1644333