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  • Title: Gate-controlled spin-orbit interaction in a parabolic GaAs/AlGaAs quantum well.
    Author: Studer M, Salis G, Ensslin K, Driscoll DC, Gossard AC.
    Journal: Phys Rev Lett; 2009 Jul 10; 103(2):027201. PubMed ID: 19659239.
    Abstract:
    We study the tunability of the spin-orbit interaction in a two-dimensional electron gas with a front and a back gate electrode by monitoring the spin precession frequency of drifting electrons using time-resolved Kerr rotation. The Rashba spin splitting can be tuned by the gate biases, while we find a small Dresselhaus splitting that depends only weakly on the gating. We determine the absolute values and signs of the two components and show that for zero Rashba spin splitting the anisotropy of the spin-dephasing rate vanishes.
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