Control of spins of Co atoms

Controlling the Spin of Co Atoms on Pt(111) by Hydrogen Adsorption.
Q. Dubout, F. Donati, C. Wäckerlin, F. Calleja, M. Etzkorn, A. Lehnert, L. Claude, P. Gambardella, and H. Brune
Phys. Rev. Lett. 114, 106807 (2015)

Cobalt atoms exposed to hydrogen gas have higher spins, an effect that could be used to build magnetic nanostructures and lattices.