Imagine the device on the left as a tiny circuit in which a ‘diatomic molecule’ is hanging off a wire. When the molecule is occupied by a single electron (with an ‘up’ spin), it co-opts a ‘down’ spin in the wire to form an exotic state (the yellow oval) that bars other electronsfrom travelling through the wire. (Notice the ‘reflected’arrow, indicating a blocked electron.)

A second electron (down spin) entering the moleculeforms an even more exotic state (darker oval), whichchanges the interaction of the first exotic state withthe electrons in the wire, making the overall statetransparent to electrons traveling down the wire.Current can now ‘pierce’ the barrier and reach theother side! This device can in principle operate as avery small transistor. To appear in Phys. Rev. B

Developing numerical tools to understand really tiny circuitsMaterials World Network (USA – Brazil – Chile) DMR - 0710529 G. Martins (Oakland Univ.) - N. Sandler and S. Ulloa (Ohio Univ.) - K. Ingersent (Univ. of Florida)

Using a wiki to foster collaborations across the continentMaterials World Network (USA – Brazil – Chile) DMR - 0710529 G. Martins (Oakland Univ.) - N. Sandler and S. Ulloa (Ohio Univ.) - K. Ingersent (Univ. of Florida)

This is a screen-shot of the wiki-page being developed at Oakland University to facilitate the collaboration between all the groups involved in the CIAM project. In the near future this wiki will have a page open to the public, where published results will be available. Oakland is also developing a web page to support the outreach efforts of all the groups involved.