Electronic and magnetic properties of metallic phases under coexisting short-range interaction and diagonal disorder

Abstract

We study a three-dimensional Anderson-Hubbard model under the coexistence of short-range interaction and diagonal disorder within the Hartree-Fock approximation. We show that the density of states at the Fermi energy is suppressed in the metallic phases near the metal-insulator transition as a proximity effect of the soft Hubbard gap in the insulating phases. The transition to the insulator is characterized by a vanishing DOS in contrast to formation of a quasiparticle peak at the Fermi energy obtained by the dynamical mean field theory in pure systems. Furthermore, we show that there exist frozen spin moments in the paramagnetic metal.

4 pages, 2 figures, published version

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Cited by in corpus (4)

• The two-dimensional disordered Mott metal-insulator transition
• Theory of Electron Transport near Anderson-Mott Transitions
• Analysis of the Disorder-Induced Zero Bias Anomaly in the Anderson-Hubbard Model
• Strongly correlated zero-bias anomaly in double quantum dot measurements