Non-Magnetic Spinguides and Spin Transport in Semiconductors

Details Non-Magnetic Spinguides and Spin Transport in Semiconductors Non-Magnetic Spinguides and Spin Transport in Semiconductors

2001-09-04

arxiv.org/abs/cond-mat/0109041v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1063/1.1421468

We propose the idea of a "spinguide", i.e. the semiconductor channel which is surrounded with walls from the diluted magnetic semiconductor (DMS) with the giant Zeeman splitting which are transparent for electrons with the one spin polarization only. These spinguides may serve as sources of a spin-polarized current in non-magnetic conductors, ultrafast switches of a spin polarization of an electric current and, long distances transmission facilities of a spin polarization (transmission distances can exceed a spin-flip length). The selective transparence of walls leads to new size effects in transport.

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