Electrical Generation of Pure Spin Currents in a Two-Dimensional Electron Gas

URN to cite this document:: urn:nbn:de:bvb:355-epub-82992
DOI to cite this document:: 10.5283/epub.8299

Frolov, S. M. ; Venkatesan, A. ; Yu, W. ; Folk, J. A. ; Wegscheider, Werner

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Date of publication of this fulltext: 05 Aug 2009 13:59

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Abstract

Pure spin currents are generated and detected in micron-wide channels of a GaAs two-dimensional electron gas, using quantum point contacts in an in-plane magnetic field as injectors and detectors. The enhanced sensitivity to spin transport offered by a nonlocal measurement geometry enables accurate spin current measurements in this widely studied physical system. The polarization of the contacts ...