Researchers from Karlsruhe, Strasbourg, and Japan have now developed a mag-netic memory with one bit per molecule. By an electric pulse, the metal-organic molecule can be switched reliably between a conductive, magnetic state and a low-conductive, non-magnetic state.
http://www.synchrotron-soleil.fr/Soleil/ToutesActualites/2012/Memoire_moleculaire_multifonctionnelle