Critical test for Altshuler-Aronov theory: Evolution of the density of states singularity in double perovskite Sr$_2$FeMoO$_6$ with controlled disorder

M. Kobayashi; K. Tanaka; A. Fujimori; Sugata Ray; D. D. Sarma

doi:10.1103/PhysRevLett.98.246401

paper

Critical test for Altshuler-Aronov theory: Evolution of the density of states singularity in double perovskite Sr $_{2}$ FeMoO $_{6}$ with controlled disorder

arXiv:0704.1688 · doi:10.1103/PhysRevLett.98.246401

Abstract

With high-resolution photoemission spectroscopy measurements, the density of states (DOS) near the Fermi level ( $E_{F}$ ) of double perovskite Sr $_{2}$ FeMoO $_{6}$ having different degrees of Fe/Mo antisite disorder has been investigated with varying temperature. The DOS near $E_{F}$ showed a systematic depletion with increasing degree of disorder, and recovered with increasing temperature. Altshuler-Aronov (AA) theory of disordered metals well explains the dependences of the experimental results. Scaling analysis of the spectra provides experimental indication for the functional form of the AA DOS singularity.

5 pages, 4 figures

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Critical test for Altshuler-Aronov theory: Evolution of the density of states singularity in double perovskite Sr2​FeMoO6​ with controlled disorder

Abstract

Cited by in corpus (1)

Critical test for Altshuler-Aronov theory: Evolution of the density of states singularity in double perovskite Sr $_{2}$ FeMoO $_{6}$ with controlled disorder