Depletion of density of states near Fermi energy induced by disorder and electron correlation in alloys

Details Depletion of density of states near Fermi energy induced by disorder and electron correlation in alloys Depletion of density of states near Fermi energy induced by disorder and electron correlation in alloys

1999-10-26

arxiv.org/abs/cond-mat/9910411v1

Physics

Condensed Matter

Strongly Correlated Electrons

1 tex file and 4 ps files

Scientific paper

10.1016/S0038-1098(00)00301-X

We have performed high resolution photoemission study of substitutionally disordered alloys Cu-Pt, Cu-Pd, Cu-Ni, and Pd-Pt. The ratios between alloy spectra and pure metal spectra are found to have dips at the Fermi level when the residual resistivity is high and when rather strong repulsive electron-electron interaction is expected. This is in accordance with Altshuler and Aronov's model which predicts depletion of density of states at the Fermi level when both disorder and electron correlation are present.

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