Electrical detection of spin transport in lateral ferromagnet–semiconductor devices View Full Text


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Article Info

DATE

2007-03

AUTHORS

Xiaohua Lou, Christoph Adelmann, Scott A. Crooker, Eric S. Garlid, Jianjie Zhang, K. S. Madhukar Reddy, Soren D. Flexner, Chris J. Palmstrøm, Paul A. Crowell

ABSTRACT

The development of semiconductor spintronics requires a reliable electronic means for writing, processing and reading information using spin-polarized carriers. Here, we demonstrate a fully electrical scheme for achieving spin injection, transport and detection in a single device. Our device consists of a lateral semiconducting channel with two ferromagnetic contacts, one of which serves as a source of spin-polarized electrons and the other as a detector. Spin detection in the device is achieved through a non-local, spin-sensitive, Schottky-tunnel-barrier contact whose electrochemical potential depends on the relative magnetizations of the source and detector. We verify the effectiveness of this approach by showing that a transverse magnetic field suppresses the non-local signal at the detection contact by inducing spin precession and dephasing in the channel (the Hanle effect). The sign of the signal varies with the injection current and is correlated with the spin polarization in the channel as determined by optical Kerr rotation measurements. More... »

PAGES

197

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/nphys543

DOI

http://dx.doi.org/10.1038/nphys543

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1000034370


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N-Triples is a line-based linked data format ideal for batch operations.

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