Self-organized three-band structure of the doped fermionic Ising spin glass

The fermionic Ising spin glass is analyzed for arbitrary filling and for al l temperatures. A self-organized three-band structure of the model is obtai ned in the magnetically ordered phase. Deviation from half-filling generate s a central nonmagnetic band, which becomes sharply separated at T=0 by (ps eudo)gaps From upper and lower magnetic bands. Replica symmetry breaking ef fects are derived fur several observables and correlations. They determine the shape of the three-band density of states, and, for given chemical pote ntial, influence the fermion filling strongly in the low-temperature regime .