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April 25th, 2005

Nanotechnology: New spin on correlated electrons

In the Kondo effect, the flow of electrons in a solid is modulated by magnetic impurities. Nanostructures such as carbon nanotubes can be designed to obtain even more complex versions of this intriguing effect.

Nanotechnology now enables researchers to create controlled, or tunable, models of electronic behaviour in solids. On page 484 of this issue, Jarillo-Herrero et al.1 present perhaps the most sophisticated example of this approach to date, studying the flow of electrons through a carbon nanotube that is made to act like an exotic magnetic atom.

* Nature

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