Selforganized 3-band structure of the doped fermionic Ising spin glass

Details Selforganized 3-band structure of the doped fermionic Ising spin glass Selforganized 3-band structure of the doped fermionic Ising spin glass

1999-10-07

arxiv.org/abs/cond-mat/9910119v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

13 pages

Scientific paper

10.1103/PhysRevB.62.9030

The fermionic Ising spin glass is analyzed for arbitrary filling and for all temperatures. A selforganized 3-band structure of the model is obtained in the magnetically ordered phase. Deviation from half filling generates a central nonmagnetic band, which becomes sharply separated at T=0 by (pseudo)gaps from upper and lower magnetic bands. Replica symmetry breaking effects are derived for several observables and correlations. They determine the shape of the 3-band DoS, and, for given chemical potential, influence the fermion filling strongly in the low temperature regime.

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