Tuning emergent magnetism in a Hund's impurity
A. A. Khajetoorians, M. Valentyuk, M. Steinbrecher, T. Schlenk, A. Shick, J. Kolorenc, A. I. Lichtenstein, T. O. Wehling , R. Wiesendanger and J. Wiebe. Nature Nanotechnology (2015) 10 , 958–964. doi:10 [...] impurity—can be realized using a single iron atom adsorbed on a platinum surface, a system that comprises a magnetic moment in the presence of strong charge fluctuations. The magnetic properties can be controlled [...] concept of a Hund's metal—a metal in which electron correlations are driven by Hund's rule coupling—can be used to explain the exotic magnetic and electronic behaviour of strongly correlated electron systems