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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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 nonlocal 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 two-dimensional electron gas.
Original languageEnglish
Article number041305(R)
JournalPhysical Review B (Condensed Matter and Materials Physics)
Issue number4
Publication statusPublished - 15 Jul 2010
Externally publishedYes


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