Electronic measurement and control of spin transport in silicon

Ian Appelbaum (), Biqin Huang and Douwe J. Monsma
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Ian Appelbaum: University of Delaware, Newark, Delaware 19716, USA
Biqin Huang: University of Delaware, Newark, Delaware 19716, USA
Douwe J. Monsma: Cambridge NanoTech Inc., Cambridge, Massachusetts 02139, USA

Nature, 2007, vol. 447, issue 7142, 295-298

Abstract: Silicon spintronics is 'go' In theory, silicon, the semiconductor of choice for today's electronic chips and transistors, should also be suitable for spintronics applications. But despite its long spin lifetime, it has not been possible to demonstrate coherent spin transport in silicon. Now Appelbaum et al., using a system designed to avoid unwanted magnetoelectronic effects and the mismatch between ferromagnetic metal electrodes and silicon, have developed a functioning silicon-based spintronics device. It features a layer made from aluminium and iron cobalt, placed between an insulating barrier and the silicon, where it filters out electrons of a particular spin.

Date: 2007
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DOI: 10.1038/nature05803

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