Critical Test for Altshuler-Aronov Theory: Evolution of the Density of States Singularity in Double Perovskitewith Controlled Disorder
- 15 June 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 98 (24), 246401
- https://doi.org/10.1103/physrevlett.98.246401
Abstract
With high-resolution photoemission spectroscopy measurements, the density of states (DOS) near the Fermi level () of double perovskite having different degrees of antisite disorder has been investigated with varying temperature. The DOS near 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.
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