Ferromagnetism and Metal-Insulator Transition in the Disordered Hubbard Model

Details Ferromagnetism and Metal-Insulator Transition in the Disordered Hubbard Model Ferromagnetism and Metal-Insulator Transition in the Disordered Hubbard Model

2002-10-14

arxiv.org/abs/cond-mat/0210296v1

Phys. Rev. Lett. 90, 196403 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.90.196403

A detailed study of the paramagnetic to ferromagnetic phase transition in the one-band Hubbard model in the presence of binary alloy disorder is presented. The influence of the disorder (with concentration $x$ and $1-x$ of the two alloy ions) on the Curie temperature $T_{c}$ is found to depend strongly on electron density $n$. While at high densities, $n>x$, the disorder always reduces $T_c$, at low densities, $n

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