Substitutional doping of Cu in diamond: Mott physics with p orbitals H. H. Arefi, S. A. Jafari and M. R. Abolhassani Eur. Phys. J. B, 77 3 (2010) 331-336 Published online: 10 September 2010 DOI: 10.1140/epjb/e2010-00268-1