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Anomalous spin-splitting of two-dimensional electrons in an AlAs Quantum Well

S. J. Papadakis·E. P. De Poortere·M. Shayegan
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Abstract

We measure the effective Lande g-factor of high-mobility two-dimensional electrons in a modulation-doped AlAs quantum well by tilting the sample in a magnetic field and monitoring the evolution of the magnetoresistance oscillations. The data reveal that |g| = 9.0, which is much enhanced with respect to the reported bulk value of 1.9. Surprisingly, in a large range of magnetic field and Landau level fillings, the value of the enhanced g-factor appears to be constant.

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S. J. Papadakis, E. P. De Poortere, M. Shayegan. 1998-08-14. Anomalous spin-splitting of two-dimensional electrons in an AlAs Quantum Well. https://doi.org/10.1103/physrevb.59.r12743

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