Science-2011-Khajetoorians-1062-4

Science-2011-Khajetoorians-1062-4 - DOI:...

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Unformatted text preview: DOI: 10.1126/science.1201725 , 1062 (2011); 332 Science , et al. Alexander Ako Khajetoorians Based Logic Operations Atom by Atom- Realizing All-Spin This copy is for your personal, non-commercial use only. clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be obtained by Permission to republish or repurpose articles or portions of articles ): September 6, 2011 www.sciencemag.org (this infomation is current as of The following resources related to this article are available online at http://www.sciencemag.org/content/333/6039/158.full.html A correction has been published for this article at: http://www.sciencemag.org/content/332/6033/1062.full.html version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/content/suppl/2011/05/04/science.1201725.DC1.html can be found at: Supporting Online Material http://www.sciencemag.org/content/332/6033/1062.full.html#related found at: can be related to this article A list of selected additional articles on the Science Web sites http://www.sciencemag.org/content/332/6033/1062.full.html#ref-list-1 , 10 of which can be accessed free: cites 24 articles This article http://www.sciencemag.org/content/332/6033/1062.full.html#related-urls 1 articles hosted by HighWire Press; see: cited by This article has been http://www.sciencemag.org/cgi/collection/physics Physics subject collections: This article appears in the following registered trademark of AAAS. is a Science 2011 by the American Association for the Advancement of Science; all rights reserved. The title Copyright American Association for the Advancement of Science, 1200 New York Avenue NW, Washington, DC 20005. (print ISSN 0036-8075; online ISSN 1095-9203) is published weekly, except the last week in December, by the Science on September 6, 2011 www.sciencemag.org Downloaded from Realizing All-Spin Based Logic Operations Atom by Atom Alexander Ako Khajetoorians, Jens Wiebe, * Bruno Chilian, Roland Wiesendanger An ultimate goal of spintronic research is the realization of concepts for atomic-scale all-spin based devices. We combined bottom-up atomic fabrication with spin-resolved scanning tunneling microscopy to construct and read out atomic-scale model systems performing logic operations. Our concept uses substrate-mediated indirect exchange coupling to achieve logical interconnection between individual atomic spins. Combined with spin frustration, this concept enables various logical operations between inputs, such as NOT and OR. I n conventional silicon-based information tech- nology, bits of information are represented by charge stored in capacitors and processed by transistor-based switches. The looming fun- damental scaling limits of this technology toward nanometer-sized devices ( 1 ) has led to an explo- ration of a variety of alternative computation...
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Science-2011-Khajetoorians-1062-4 - DOI:...

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