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Published Online April 18, 2002
Science DOI: 10.1126/science.1070563

Reports

This article has been retracted

Submitted on February 5, 2002
Accepted on April 4, 2002

A Single Molecular Spin Valve

J. H. Schön 1*, E. G. Emberly 2, G. Kirczenow 3

1 Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, NJ 07974-0636, USA.
2 NEC Research Institute, 4 Independence Way, Princeton, NJ 08540, USA.
3 Department of Physics, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.

* To whom correspondence should be addressed. E-mail: hendrik{at}lucent.com.

The charge transport through a single benzene-1,4-dithiolate molecule embedded in an inert matrix of insulating alkanethiol molecules and sandwiched between ferromagnetic electrodes is studied as a function of magnetic field. Electronic transport through the device structure shows a pronounced spin valve behavior and a giant magnetoresistive effect exceeding 30% at room temperature. The result demonstrates the possibility of using the spin degree of freedom in molecular-based devices.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)