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arXiv · 1005.3559

Measurement of spin-dependent conductivities in a two-dimensional electron gas

H. Ebrahimnejad·Y. Ren·S. M. Frolov·I. Adagideli·J. A. Folk·W. Wegscheider
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Abstract

Spin accumulation is generated by injecting an unpolarized charge current into a channel of GaAs two-dimensional electron gas subject to an in-plane magnetic field, then measured in a non-local geometry. Unlike previous measurements that have used spin-polarized nanostructures, here the spin accumulation arises simply from the difference in bulk conductivities for spin-up and spin-down carriers. Comparison to a diffusive model that includes spin subband splitting in magnetic field suggests a significantly enhanced electron spin susceptibility in the 2D electron gas.

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H. Ebrahimnejad, Y. Ren, S. M. Frolov, I. Adagideli, J. A. Folk, W. Wegscheider. 2010-05-19. Measurement of spin-dependent conductivities in a two-dimensional electron gas. https://doi.org/10.1103/physrevb.82.041305

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