Route to ferromagnetism in organic polymers
arXiv:1007.4994 · doi:10.1103/PhysRevLett.105.266403
Abstract
Employing a rigorous theoretical method for the construction of exact many-electron ground states we prove that interactions can be employed to tune a bare dispersive band structure such that it develops a flat band. Thereby we show that pentagon chain polymers with electron densities above half filling may be designed to become ferromagnetic or half metallic.
11 pages, 3 figures