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Rashba spin-orbit coupling in InGaAs/InP quantum wires

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Abstract

The effect of Rashba spin-orbit coupling on the transport properties of InGaAs/InP quantum wire structures is investigated. The geometry of the wire structures was defined by selective wet chemical etching. For wires without a gate a clear beating pattern, due to the presence of the Rashba spin-orbit coupling, is observed for wires with a width down to 600 nm. For narrower wires no beating pattern is found. The experimental observations are explained by contribution of the Rashba spin-orbit coupling to the one-dimensional magnetosubbands. By depleting the onedimensional conductor by means of a gate electrode the Rashba coupling strength could be controlled.

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Authors and Affiliations

  1. Institute of Thin Films and Interfaces (ISG-1), Research Centre Jülich, 52425, Jülich, Germany

    Jens Knobbe, Vitaliy A. Guzenko & Thomas Schäpers

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  1. Jens Knobbe
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  2. Vitaliy A. Guzenko
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  3. Thomas Schäpers
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Knobbe, J., Guzenko, V.A. & Schäpers, T. Rashba spin-orbit coupling in InGaAs/InP quantum wires. MRS Online Proceedings Library 825, 57 (2004). https://doi.org/10.1557/PROC-825-G5.7

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  • DOI: https://doi.org/10.1557/PROC-825-G5.7

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