Authors: K. Byczuk, U. Yu, W. Hofestetter, D. Vollhardt
Journal:
Acta Physica Polonica A 115, 7 (2009)
Alloy disorder can affect ferromagnetism and metal--insulator transitions of correlated lattice fermion systems in subtle and often unexpected ways. Solving the Hubbard model and the periodic Anderson model within dynamical mean--field theory we show that alloy disorder can increase the Curie temperature of a non--disordered system, and also yields novel Mott or Kondo insulators at fractional electronic densities.